Infortrend A12U A08U G2421 Users Manual A08_12U_G1410_Front

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EonStor® A12U/A08U-G2421 Installation and Hardware Reference Manual
Chapter 1 Introduction
Chapter 2 Hardware Installation
Chapter 3 System Monitoring
Chapter 4 System Connection and Operation
Chapter 5 System Maintenance
Appendix A Subsystem Specifications
Appedix B Spare Parts and Accessories
- Spare Parts
- Accessories and Optional Items
  - Accessories Overview
  - Accessory Parts List
Appendix C Pinouts
Index

EonStor A08U/A12U-G1410 i

EonStor

A12U/A08U-G2421

SCSI-to-SATA RAID Subsystem

Installation and Hardware

Reference Manual

Version 1.1 (12, 2005)

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Contact Information

Asia Pacific

(International Headquarters)

Infortrend Technology, Inc.

8F, No. 102 Chung-Shan Rd., Sec. 3

Chung-Ho City, Taipei Hsien, Taiwan

Tel: +886-2-2226-0126

Fax: +886-2-2226-0020

sales@infortrend.com.tw

support@infortrend.com.tw

http://www.infortrend.com.tw

Americas

Infortrend Corporation

3150 Coronado Dr., Unit C

Santa Clara, CA 95054

USA

Tel: +1-408-988-5088

Fax: +1-408-988-6288

sales@infortrend.com

tsd@infortrend.com

http://www.infortrend.com

China

Infortrend Technology, Limited

Room 1210, West Wing, Tower One, Junefield

Plaza, No. 6 Xuanwumen Street, Xuanwu

District, Beijing, China

Post code: 100052

Tel: +86-10-6310-6168

Fax: +86-10-6310-6188

sales@infortrend.com.cn

support@infortrend.com.cn

http://www.infortrend.com.cn

Europe (EMEA)

Infortrend Europe Limited

5 Elmwood Chineham Business Park

Basingstoke, Hampshire

RG24 8WG, UK

Tel: +44-1256-70-77-00

Fax: +44-1256-70-78-89

sales@infortrend-europe.com

support@infortrend-europe.com

http://www.infortrend-europe.com

Japan

Infortrend Japan, Inc.

6F, Okayasu Bldg.,

1-7-14 Shibaura Minato-ku,

Tokyo, 105-0023 Japan

Tel: +81-3-5730-6551

Fax: +81-3-5730-6552

support@infortrend.co.jp

http://www.infortrend.co.jp

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

This Edition First Published 2005

stored in a retrieval system, or translated into any language or computer language, in

any form or by any means, electronic, mechanical, magnetic, optical, chemical,

manual or otherwise, without the prior written consent of Infortrend Technology, Inc.

Disclaimer

Infortrend Technology makes no representations or warranties with respect to the

contents hereof and specifically disclaims any implied warranties of merchantability

or fitness for any particular purpose. Furthermore, Infortrend Technology reserves

the right to revise this publication and to make changes from time to time in the

content hereof without obligation to notify any person of such revisions or changes.

Product specifications are also subject to change without prior notice.

Trademarks

Infortrend, the Infortrend logo, RAIDWatch, and EonStor are registered trademarks

of Infortrend Technology, Inc. Other names prefixed with “IFT” are trademarks of

Infortrend Technology, Inc.

PowerPC® is a trademark of International Business Machines Corporation and

Motorola Inc.

Solaris and Java are trademarks of Sun Microsystems, Inc.

All other names, brands, products or services are trademarks or registered trademarks

of their respective owners.

iii

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Warnings and Certifications

FCC (applies in the U.S. and Canada)

FCC Class B Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a Class B

digital device, pursuant to Part 15 of the FCC Rules (47 CFR, Part 2, Part 15 and

CISPR PUB. 22 Class B). These limits are designed to provide reasonable protection

against harmful interference when the equipment is operated in a residential

installation. This equipment generates, uses, and can radiate radio frequency energy

and, if not installed and used in accordance with this user’s guide, may cause harmful

interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that

to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help

This device complies with Part 15 of FCC Rules. Operation is subjected to the

following two conditions: 1) this device may not cause harmful interference, and 2)

this device must accept any interference received, including interference that may

cause undesired operation.

Warning:

A shielded power cord is required in order to meet FCC emission limits and also to

prevent interference to nearby radio and television reception.

Use only shielded cables to connect I/O devices to this equipment. You are cautioned

that changes or modifications not expressly approved by the party responsible for

compliance could void your authority to operate the equipment.

This device is in conformity with the EMC.

(Certified Worldwide)

This device meets the requirements of the CB standard for electrical equipment with regard to

establishing a satisfactory level of safety for persons using the device and for the area

surrounding the apparatus. This standard covers only safety aspects of the above apparatus; it

does not cover other matters, such as style or performance.

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Table of Contents

ONTACT

NFORMATION

.....................................................................................................................

ARNINGS AND

ERTIFICATIONS

......................................................................................................

AFETY

RECAUTIONS

.....................................................................................................................

VIII

Precautions and Instructions............................................................................................................viii

ESD Precautions..............................................................................................................................viii

BOUT

HIS

ANUAL

........................................................................................................................

HOULD

EAD

HIS

ANUAL

?.................................................................................................

Related Documentation ..................................................................................................................... ix

Conventions....................................................................................................................................... ix

CHAPTER 1 INTRODUCTION........................................................................... 1-1

1.1 P

RODUCT

VERVIEW

...........................................................................................................1-1

1.1.1 Introduction .........................................................................................................................1-1

1.1.2 Model Variations.................................................................................................................1-2

1.1.3 Enclosure Chassis................................................................................................................1-2

1.1.3.1 Chassis Overview...................................................................................................................1-2

1.1.3.2 Physical Dimensions ..............................................................................................................1-4

1.1.3.3 Front Panel Overview.............................................................................................................1-4

1.1.3.4 Hard Drive Numbering...........................................................................................................1-5

1.1.3.5 Rear Panel Overview..............................................................................................................1-5

1.1.3.6 Backplane Board....................................................................................................................1-7

1.2

UBSYSTEM

OMPONENTS

...................................................................................................1-7

1.2.1

LCD Panel ...........................................................................................................................1-7

1.2.2

Drive Trays..........................................................................................................................1-8

1.2.3

The RAID Controller Module .............................................................................................1-8

Controller Module Interfaces...................................................................................................................1-9

　 Host Ports...............................................................................................................................1-9

　 Ethernet Port ..........................................................................................................................1-9

　 COM Port.............................................................................................................................1-10

DIMM Module ......................................................................................................................................1-10

1.2.4

Battery Backup Unit..........................................................................................................1-10

1.2.5

Power Supply Units...........................................................................................................1-11

1.2.6

Cooling Fan Modules ........................................................................................................1-12

Advanced Fault-Preventative Operation................................................................................................ 1-12

1.3

UBSYSTEM

ONITORING

..................................................................................................1-13

1.3.1

C Bus ..............................................................................................................................1-13

1.3.2

LED Indicators ..................................................................................................................1-13

1.3.3

Firmware and RAIDWatch GUI........................................................................................1-13

1.3.4

Audible Alarms..................................................................................................................1-14

1.4

-S

WAPPABLE

OMPONENTS

........................................................................................1-14

1.4.1

Hot-Swap Capabilities.......................................................................................................1-14

1.4.2

Components.......................................................................................................................1-14

1.4.3

Normalized Airflow...........................................................................................................1-15

CHAPTER 2 HARDWARE INSTALLATION................................................... 2-1

2.1

NTRODUCTION

.....................................................................................................................2-1

2.2

NSTALLATION

REREQUISITES

............................................................................................2-1

2.3

AFETY

RECAUTIONS

.........................................................................................................2-2

2.3.1

Precautions and Instructions................................................................................................2-2

2.3.2

Static-Free Installation.........................................................................................................2-3

2.3.3

BBU Warnings and Precautions ..........................................................................................2-3

2.4

ENERAL

NSTALLATION

ROCEDURE

.................................................................................2-4

2.4.1

Installation Procedure Flowchart.........................................................................................2-5

2.5

NPACKING THE

UBSYSTEM

...............................................................................................2-6

2.6

NSTALLATION

VERVIEW

...................................................................................................2-7

2.6.1

Pre-installed Components....................................................................................................2-7

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

2.6.2

Uninstalled Components......................................................................................................2-7

2.7

ACKMOUNTING

..................................................................................................................2-7

2.7.1

Considerations for Installation Site and Chassis..................................................................2-7

2.7.2

Mounting Holes Positions....................................................................................................2-8

2.8

BBU I

NSTALLATION

............................................................................................................2-9

2.8.1

BBU Module Installation Overview....................................................................................2-9

2.8.2

Installation Procedure..........................................................................................................2-9

2.9

ARD

RIVE

NSTALLATION

..............................................................................................2-11

2.9.1

Hard Drive Installation Pre-requisites ...............................................................................2-11

2.9.2

Drive Installation...............................................................................................................2-11

2.10

RIVE

RAY

NSTALLATION

...............................................................................................2-12

CHAPTER 3 SYSTEM MONITORING.............................................................. 3-1

3.1

UBSYSTEM

ONITORING

VERVIEW

..................................................................................3-1

3.2

TATUS

INDICATING

LED

..................................................................................................3-3

3.2.1

Brief Overview of the LEDs................................................................................................3-3

3.2.2

Controller Module LEDs.....................................................................................................3-3

3.2.3

Ethernet Port LEDs..............................................................................................................3-4

3.2.4

LCD Keypad Panel..............................................................................................................3-5

3.2.5

Drive Tray LEDs.................................................................................................................3-6

3.2.6

BBU Module LED...............................................................................................................3-7

3.2.7

PSU LED.............................................................................................................................3-7

3.2.8

Cooling Fan Module LED ...................................................................................................3-7

3.3

UDIBLE

LARM

..................................................................................................................3-8

3.3.1

Default Threshold Values....................................................................................................3-9

3.3.2

Failed Devices .....................................................................................................................3-9

3.4

C M

ONITORING

...............................................................................................................3-10

CHAPTER 4 SYSTEM CONNECTION AND OPERATION........................... 4-1

4.1

SCSI C

ONNECTION

VERVIEW

............................................................................................4-1

4.1.1

SCSI Cables.........................................................................................................................4-1

4.1.2

SCSI Port on the Controller Rear Panel...............................................................................4-1

4.1.3

SCSI Termination................................................................................................................4-2

Using the LCD Keypad Panel..................................................................................................................4-4

Configuration over Hyper Terminal ........................................................................................................4-4

Via RAIDWatch GUI ..............................................................................................................................4-5

4.2

OST

ONNECTION

OPOLOGY

............................................................................................4-6

4.2.1

Single Host ..........................................................................................................................4-6

4.2.2

Dual Hosts ...........................................................................................................................4-7

4.3

OWER

...........................................................................................................................4-7

4.3.1

Power On Checklist.............................................................................................................4-7

4.3.2

Power On Sequence.............................................................................................................4-8

4.3.3

Power On Procedure............................................................................................................4-8

4.3.4

Power On Status Check.......................................................................................................4-9

4.3.5

LCD Screen .......................................................................................................................4-10

4.4

OWER

ROCEDURE

....................................................................................................4-11

CHAPTER 5 SYSTEM MAINTENANCE

5.1

VERVIEW

...........................................................................................................................5-1

5.1.1

About Subsystem Maintenance ...........................................................................................5-1

5.1.2

General Notes on Component Replacement........................................................................5-1

5.2

EPLACING

ONTROLLER

ODULE

OMPONENTS

..............................................................5-2

5.2.1

Overview .............................................................................................................................5-2

5.2.2

Notes on Controller Module Maintenance...........................................................................5-3

5.2.3

Removing the Controller Module........................................................................................5-3

5.2.4

Replacing the Controller Module ........................................................................................5-4

5.3

EPLACING OR

PGRADING

EMORY

ODULES

.................................................................5-5

5.3.1

Memory Module Installation Overview ..............................................................................5-5

5.3.2

Selecting a Memory Module ...............................................................................................5-5

5.3.3

DIMM Module Installation..................................................................................................5-6

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

5.4

EPLACING A

AULTY

BBU.................................................................................................5-8

5.5

EPLACING A

AILED

PSU M

ODULE

....................................................................................5-9

5.5.1

Notes on PSU Module Maintenance....................................................................................5-9

5.5.2

Replacing the PSU Module .................................................................................................5-9

5.6

EPLACING A

AILED

OOLING

ODULE

...................................................................5-12

5.6.1

Notes on Cooling Fan Module Maintenance .....................................................................5-12

5.6.2

Replacing a Cooling Fan Module......................................................................................5-12

5.7

RIVE

RAY

AINTENANCE

..............................................................................................5-13

5.7.1

Notes on Hard Drive Maintenance ....................................................................................5-13

5.7.2

Replacing a Failed Hard Drive ..........................................................................................5-15

APPENDIX A SUBSYSTEM SPECIFICATIONS

A.1

ECHNICAL

PECIFICATIONS

...............................................................................................A-1

Vibration......................................................................................................................................... A-2

A.2

ONTROLLER

PECIFICATIONS

............................................................................................A-3

A.2.1 Configuration........................................................................................................................ A-3

A.2.2 Architecture .......................................................................................................................... A-3

A.3

RIVE

RAY

PECIFICATIONS

.............................................................................................A-4

A.4

OWER

UPPLY

PECIFICATIONS

.........................................................................................A-4

A.5

OOLING

ODULE

PECIFICATIONS

....................................................................................A-4

A.6

RAID M

ANAGEMENT

..........................................................................................................A-5

A.7

AULT

OLERANCE

ANAGEMENT

.....................................................................................A-5

APPENDIX B SPARE PARTS AND ACCESSORIES

B.1

PARE

ARTS

....................................................................................................................... B-1

B.1.1

Spare Parts Overview ......................................................................................................... B-1

B.1.2

Spare Parts List................................................................................................................... B-1

B.1.3

Controller Modules............................................................................................................. B-2

B.2

CCESSORIES AND

PTIONAL

TEMS

................................................................................... B-3

B.2.1

Accessories Overview ........................................................................................................ B-3

B.2.2

Accessory Parts List ........................................................................................................... B-3

APPENDIX C PINOUTS

C.1.

SCSI P

ORT

: VHDCI C

ONNECTOR

INOUTS

........................................................................ C-1

C.2.

COM1 C

ABLE

: DB9

AND

UDIO

ACK

INOUTS

................................................................ C-2

C.3.

IFT-9011 N

ULL

ODEM

..................................................................................................... C-3

C.4.

THERNET

ORT

INOUTS

................................................................................................... C-3

C.5.

AIN

OWER

...................................................................................................................... C-3

vii

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Safety Precautions

Precautions and Instructions

• Prior to powering on the subsystem, ensure that the correct power range is being

used.

• The EonStor A12U and A08U subsystems come with eight (8) or twelve (12)

drive bays. Leaving any of these drive bays empty will seriously affect the

efficiency of the airflow within the enclosure, and will consequently lead to the

system overheating, which can cause irreparable damage.

• If a module fails, leave it in place until you have a replacement unit and you are

ready to replace it.

• Airflow Consideration: The subsystem requires an airflow clearance, especially

at the front and the rear side.

• Handle subsystem modules using the retention screws, extraction levers, and the

metal frames/faceplates. Avoid touching PCB boards and connector pins.

• To comply with safety, emission, or thermal requirements, none of the covers or

replaceable modules should be removed. Make sure that during operation, all

enclosure modules and covers are securely in place.

• Be sure that the rack cabinet that the subsystem chassis is to be installed provides

sufficient ventilation channels and airflow circulation around the subsystem.

• Provide a soft, clean surface to place your subsystem on before working on it.

Servicing on a rough surface may damage the exterior of the chassis.

• If it is necessary to transport the subsystem, repackage all disk drives separately.

If using the original package material, other replaceable modules can stay within

the enclosure.

ESD Precautions

Observe all conventional anti-ESD methods while handling system modules. The use

of a grounded wrist strap and an anti-static work pad are recommended. Avoid dust

or debris in your work area.

viii

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

About This Manual

This manual:

• Introduces the EonStor A12U/A08U-G2421 RAID Subsystems.

• Describes all the active components in the subsystem.

• Provides recommendations and details about the hardware installation process.

• Briefly describes how to monitor the subsystem.

• Describes how to maintain the subsystem.

This manual does not:

• Describe components that are not user-serviceable.

• Describe the configuration options of firmware, using terminal emulation

program, or the RAIDWatch GUI that came with your subsystem.

• Give a detailed description of the RAID processing units, or the RAID

controllers embedded within the subsystem.

Who Should Read This Manual?

This manual assumes that its readers are experienced with computer hardware

installation and are familiar with storage enclosures.

Related Documentation

• Generic Operation Manual

• RAIDWatch User’s Manual

These two documents can be found in the product utility CD included with your

subsystem package.

Conventions

Naming

From this point on and throughout the rest of this manual, the EonStor series is

referred to as simply the “subsystem” or the “system.”

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Important Messages

Important messages appear where mishandling of components is possible or when

work orders can be misunderstood. These messages also provide vital information

associated with other aspects of system operation. The word “important” is written

as “IMPORTANT,” both capitalized and bold and is followed by text in italics. The

italicized text is the important message.

Warnings

Warnings appear where overlooked details may cause damage to the equipment or

result in personal injury. Warnings should be taken seriously. Warnings are easy to

recognize. The word “warning” is written as “WARNING,” both capitalized and

bold and is followed by text in italics. The italicized text is the warning message.

Cautions

Cautionary messages should also be heeded to help you reduce the chance of losing

data or damaging the system. Cautions are easy to recognize. The word “caution” is

written as “CAUTION,” both capitalized and bold and is followed by text in italics.

The italicized text is the cautionary message.

Notes

Notes inform the reader of essential but non-critical information. These messages

should be read carefully as any directions or instructions contained therein can help

you avoid making mistakes. Notes are easy to recognize. The word “note” is written

as “NOTE,” both capitalized and bold and is followed by text in italics. The

italicized text is the note message.

Steps

Steps describe the sequential tasks in a specific work procedure. Following the steps

in their proper order helps guarantee effectiveness and lowers the chance of making

mistakes.

Lists

Bulleted Lists: Bulleted lists are statements of non-sequential facts. They can be read

in any order. Each statement is preceded by a round black dot “•.”

Numbered Lists: Numbered lists describe sequential steps you should follow in

order.

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Software and Firmware Updates

Please contact your system vendor or visit Infortrend’s FTP site

(ftp.infortrend.com.tw) for the latest software or firmware updates. Note that the

firmware version installed on your system should provide the complete functionality

listed in the specification sheet/user’s manual. We provide special revisions for

various application purposes. Therefore, DO NOT upgrade your firmware unless you

fully understand what a firmware revision will do.

Problems that occur during the updating process may cause unrecoverable errors and

system down time. Always let technical personnel handle the upgrade or consult

technical personnel before proceeding with any firmware upgrade.

Chapter 1

Introduction

1.1 Product Overview

1.1.1 Introduction

This hardware manual briefly introduces the EonStor A12U and A08U serial ATA

(SATA) RAID subsystem series. The SATA-based RAID subsystems come with two

320MB/second SCSI (SCSI-320) host channels and provide RAID protection to the

data stored in the eight (8) or twelve (12) hot-swappable, SATA-II hard drives. The

2U-profile subsystems are equipped with redundant and hot-swappable cooling fan

and power supply modules to reduce the chance of downtime by component failure.

The modular nature of the subsystem and the easy accessibility to all major

components ensure the ease of subsystem maintenance. The differences between the

two models will be described in the following sections

The 12-bay and 8-bay subsystems are shown below:

Figure 1-1: EonStor 12-bay SATA RAID Subsystem

Figure 1-2: EonStor 8-bay SATA RAID Subsystem

1-1

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

1.1.2 Model Variations

There are two available models in the 2U version of the EonStor SATA-II RAID

subsystem series. Below is a comparison chart listing major components of the two

models.

A12U-G2421 A08U-G2421

Number of Drive Bays 12 8

RAID Controller IFT-82AU24GD12 IFT-82AU24GD08

Host Channels SCSI-320 x 2 SCSI-320 x 2

PSUs 2 2

Cooling Modules 3 2

LCD Panel 1 1

Battery Support Optional Optional

Table 1- 1: Available SATA RAID Subsystem Models

NOTE:

On receiving and unpacking your subsystem, please check the package contents

against the included unpacking checklist. If any modules appear to be missing,

please contact your subsystem vendor immediately.

1.1.3 Enclosure Chassis

1.1.3.1 Chassis Overview

The EonStor subsystem comes in a 2U metal chassis. A backplane board divides the

enclosure internally into front and rear sections. The front section accommodates

twelve (12) or eight (8) drive trays (with their associated hard drives) and the rear

section accommodates two (2) PSU modules, two (2) or three (3) single-fan cooling

modules, and a single RAID controller module. The two (2) forearm handles on the

front of the subsystem enable you to easily insert/extract the chassis into/from a rack

or cabinet. Pre-drilled mounting holes on the sides of the chassis allow you to attach

separately purchased slide rails.

Product Overview

1-2

Chapter 1: Introduction

Figure 1-3: Locations of Key Components in a 12-bay Model

Figure 1-4: Locations of Key Components in an 8-bay Model

CAUTION!

When working with the subsystem, it is important to use tools with extreme care.

Do not place tools or other items on top of the enclosure to help avoid damaging

the outward appearance of chassis.

Product Overview

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

1.1.3.2 Physical Dimensions

The subsystems come in a standard 2U, 19” chassis with the following dimensions:

• Measured with forearm handles: 482mm x 88mm x 505mm (width x height x

depth)

• Measured without forearm handles: 446mm x 88mm x 490mm (width x height x

depth)

NOTE:

Components accessed through the front panel are referred to as “Front Panel

Components” and Components accessed through the rear panel are referred to as

“Rear Panel Components.”

1.1.3.3 Front Panel Overview

The front section of the subsystem features a 4 x 2 or 4 x 3 layout for eight (8) or

twelve (12) 3.5-inch disk drives and a foldable LCD keypad panel. The front panels

of the RAID subsystems described in this manual are shown in Figure 1-5 and

Figure 1-6. A description of each front panel component is given below:

Figure 1-5: Front View – A12U 12-bay Model

Figure 1-6: Front View – A08U 8-bay Model

The front panels shown in Figure 1-5 and Figure 1-6 are designed to accommodate

the following components:

• Forearm handles with an LCD keypad panel: The LCD Panel mounted on the

left handle shows system information and provides local access to the firmware-

embedded configuration and monitoring utility.

Product Overview

1-4

Chapter 1: Introduction

• Drive bays with drive tray canisters: The drive bays are used to house the

subsystem hard drives.

The

A12U contains 12 drive bays while the A08U contains

8 drive bays with a blank plate covering the lower part of the front panel.

1.1.3.4 Hard Drive Numbering

The subsystems are housed in an enclosure that is 4 bays wide and 3 or 2 bays high.

When viewed from the front, drive bays (slots) are numbered 1 to 12 (See Figure 1-

7) or 1 to 8 (See Figure 1-8), from the left to the right, and then from the top to the

bottom.

Figure 1-7: A12U Drive Bays Numbering Sequence

Figure 1-8: A08U Drive Bays Numbering Sequence

1.1.3.5 Rear Panel Overview

The rear section of the subsystems are accessed through the rear panel and is reserved

for a single RAID controller module, one (1) battery backup unit (BBU), two (2)

power supply units (PSUs), and three (3-A12U) or two (2-A08U) cooling fan

modules.

The subsystem rear views are shown in Figure 1-9 and Figure 1-10. A description

of each rear panel component is given in the proceeding discussions:

Product Overview

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Figure 1-9: Rear View – A12U-G2421 Subsystem

Figure 1-10: Rear View – A08U-G2421 Subsystem

The rear panels shown above are designed to accommodate the following

components:

• RAID controller module: The controller module contains a controller main

board and a pre-installed DDR DIMM module.

• Power Supply Unit (PSU): The PSU is used to provide power to the

subsystem.

• BBU module: A BBU comes as an optional module which provides the

protective implementation to cached data; and, unless deselected when

purchasing the subsystems, is installed into the module slot located at the

upper left corner of the controller module.

• Cooling fan module: The redundant cooling fan module is used to ventilate

the subsystem and to reduce the temperature within the subsystem. The 12-bay

model has an additional cooling module installed in the bottom module bay.

NOTE:

Each of the power supplies on the sides of the enclosure houses one cooling fan

module in a retrievable canister. When a power supply is removed, the cooling

module is also removed. Therefore, replace the power supply unit as fast as possible

whenever it becomes necessary. Cooling fan modules can be independently removed

from the chassis without affecting PSU operation.

Product Overview

1-6

Chapter 1: Introduction

1.1.3.6 Backplane Board

An integrated backplane board separates the front and rear sections of the

subsystems. The PCB board provides traces for logic level signal traces and low

voltage power paths. It contains no user-serviceable components.

1.2 Subsystem Components

All the active components on the subsystems can be accessed through either the front

or rear panel. The modular design of the active components facilitates their easy

installation and removal. Hot-swap mechanisms are incorporated to eliminate power

surges and signal glitches that might occur while removing or installing these

modules.

1.2.1 LCD Panel

Figure 1-11: Opening the Front Handle

The LCD panel shown in Figure 1-11 consists of a 16 characters x 2 rows LCD

screen with push buttons, a mute button, and LED status indicators. The LCD front

panel provides full access to all array configurations and monitoring. After powering

up the subsystem, the initial screen will show the subsystem model name. A different

name can be manually assigned to the subsystem or different drive arrays. This will

enable easier identification in a topology consisting of numerous arrays.

Figure 1-12: Front Panel Retention Latch

To access drive bays in the left- or right-hand side column, first flip the retention

latches (see Figure 1-12) on the enclosure front handles, and then swing the handles

to the left- and right-hand sides. To close the handles (see Figure 1-13), swing the

handles toward the system; gently press the handles until a click is heard. The latches

will keep the handles in place.

Subsystem Components

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Figure 1-13: Closing the Front Handles

1.2.2 Drive Trays

The subsystems come with 12 or 8 drive trays (see Figure 1-14) designed to

accommodate separately purchased standard 1-inch pitch, 3.5-inch disk drives. The

drive bays are accessed from the enclosure front. Two LED’s on the front of the tray

are used to indicate the drive status. A key-lock on each drive tray secures the hard

drive in place, while an easily accessible release button ensures fast and efficient

drive hot-swapping.

Figure 1-14: Drive Tray Front View

PN: IFT-9273CDTray – Drive Tray Module

WARNING!

Be careful not to warp, twist, or contort the drive tray in any way (e.g., by dropping it

or resting heavy objects on it). The drive tray has been customized to fit into the drive

bays in the subsystem. If the drive bay superstructure is deformed or altered, the drive

trays may not fit into the drive bay.

1.2.3 The RAID Controller Module

12-bay A12U-G2421 Æ PN: IFT-82AU24GD12-M2 (w/ 256MB DDR DIMM)

12-bay A12U-G2421 Æ PN: IFT-82AU24GD12 (w/o DDR DIMM)

8-bay A08U-G2421 -Æ PN: IFT-82AU24GD08-M2 (w/ 256MB DDR DIMM)

8-bay A08U-G2421 -Æ PN: IFT-82AU24GD08 (w/o DDR DIMM)

The RAID controller module contains a main circuit board, a preinstalled 256MB

capacity or above DDR RAM DIMM module, and the necessary support interfaces.

Subsystem Components

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Chapter 1: Introduction

The controller module contains no user-serviceable components. Except when

replacing a faulty unit or installing/upgrading the cache memory inside, the controller

module should never be removed or opened.

WARNING!

Although the RAID controller can be removed, the only time you should touch the

controller itself is to replace the memory module or to install the memory module.

The RAID controller is built of sensitive components and unnecessary tampering can

damage the controller.

Controller Module Interfaces

The subsystems provide external interfaces to host computers and management

station(s) through the RAID controller’s rear-side faceplate as shown in Figure 1-15.

Note that the rear-facing faceplates of the A12U and A08U models look identical.

Figure 1-15: Controller Module Faceplate

• Host Ports

SCSI-320 Host Ports: Two SCSI-320 host channels connect the subsystem to the

host computers equipped with SCSI-320 compatible adapters through the dual-stack

VHDCI connectors. The dual-stack connectors facilitate cascade connections for

configurations such as host clustering or cascading with another RAID subsystem.

NOTE:

This subsystems come with preset configurations for channel mode and channel ID

settings, and should be sufficient for most applications.

• Ethernet Port

All controller modules on the subsystems come with a single 10/100BasedT RJ-45

Ethernet port. The Ethernet port is used for local or remote management through the

network using the RAIDWatch GUI manager or Telnet protocol.

Subsystem Components

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

• COM Port

All controller modules come with one RS-232C (audio jack) serial port. The serial

port is used for local access to the system-embedded configuration utility over the

included serial port cable.

DIMM Module

The controller module comes with a preinstalled 256MB capacity or above DDR

RAM DIMM module and can support a larger capacity up to 2GB. The DIMM

module is mounted in an easily accessible location on the controller board. However,

when the DIMM module is being changed, the controller module must be removed

from the subsystem chassis.

1.2.4 Battery Backup Unit

PN: IFT-9273CBT-C

An optional, separately purchased Li-ION battery backup unit (BBU) module can

sustain cache memory for days after a power failure. If you purchased a BBU, it will

be installed on the upper left corner of the controller module in the rear of subsystem

chassis. Please refer to Chapter 2 for installation details.

Figure 1-16: BBU Module

In accordance with international transportation regulations, the BBU module is only

charged to between 35% and 45% of its total capacity when shipped. Therefore,

when powering on the subsystem for the first time (see Section 4.4) the BBU will

begin to charge its batteries to their full capacity. It normally requires approximately

twelve (12) hours for the battery to be fully charged. If the battery is not fully

charged after twelve (12) hours (its LED is still flashing), there is a problem with the

BBU module and you should contact your subsystem vendor immediately. While the

battery is being charged, the LED on the BBU rear panel and the fifth LED on the

controller module will flash. (See Chapter 3.2.6 for details on the LED indicators.)

You can check the status of the battery’s charge via RAIDWatch manager or the

firmware utility screen.

Subsystem Components

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Chapter 1: Introduction

1.2.5 Power Supply Units

PN: IFT-9272CPSU-0011

The SATA-based EonStor subsystems are equipped with two (2) redundant, hot-

swappable, 2U, 350W power supply unit (PSUs) modules. The PSU is permanently

mounted into a 2U high (dual-level) bracket especially designed to house both the

PSU and a cooling module mounted underneath. PSUs can be found on either side of

the controller module.

Each PSU comes with a single power socket for power cord plug-in and a single

power switch for you to turn the PSU on and off. Each PSU also comes with two

embedded cooling fans to provide sufficient airflow to keep the PSU cool. A single

LED is used to indicate the PSU status. A handle at the back of the PSU has been

especially designed to enable you to remove the PSU from the subsystem while the

system is still online. This should only be done if the PSU has failed and needs to be

replaced.

NOTE:

Hot-swapping the PSU also removes the cooling module at the lower slot.

A retention screw at the upper right corner of the PSU module is used to secure the

PSU to the enclosure. If the PSU needs to be removed, the retention screw must be

removed first. When installing a new PSU module, make sure that the retention screw

has been firmly secured.

Figure 1-17: PSU Module

For the PSU specifications, please refer to Appendix B.

Subsystem Components

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

1.2.6 Cooling Fan Modules

PN: 9272CfanModE-0010

The SATA-based EonStor subsystems are equipped with two (for A08U, the 8-bay

model) or three (for A12U, the 12-bay model), 1U single-fan, redundant, hot-

swappable cooling modules shown in

Figure 1-18

. One 9.7cm fan is housed in each

cooling module. These modules have been designed to generate a cooling flow from

the front to the rear of the subsystem to extract the heat generated by the SATA hard

drives. Two of the cooling fan modules are installed directly beneath the PSUs. For

the 12-bay subsystem, a third module is located directly beneath the controller

module.

Figure 1-18: Top View of a Cooling Fan Module

Advanced Fault-Preventative Operation

The cooling fan modules support dual-speed operation modes that help to protect the

subsystem in the event of component failure or extreme working condition.

Intelligent Dual Speed Operation

The cooling fans operate with two rotation speeds. Under normal operating

conditions, the cooling fans run at the low speed, which is sufficient for maintaining

efficient airflow across components. Under the following conditions, cooling fans

raise their rotation speed to increase the airflow:

1. Component Failure: if another cooling fan module, a PSU, or a temperature

sensor fails, the remaining cooling fan(s) automatically raises its rotation

speed.

2. Elevated Temperature: if the temperature breaches the upper threshold set for

any of the interior temperature sensors, the cooling fans automatically raises

its rotation speed.

3. During the subsystem initialization stage, the cooling fans operate at the high

speed and return to lower speed once the initialization process is completed

and no erroneous condition is detected.

Subsystem Components

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Chapter 1: Introduction

NOTE:

There are two values set for the upper temperature thresholds. One is set for event

notification and the other triggering higher fan rotation speed. The preset value

for event notification can be changed using the firmware-embedded configuration

utility, while the fan speed trigger is not a user’s option. Please refer to the

Generic Operation Manual for the options with event notification values.

1.3 Subsystem Monitoring

The SATA-based RAID subsystems come with a number of different monitoring

methods that provide you with continual updates on the status of the system and

individual components. The following monitoring features are included in the

subsystem.

1.3.1 I

C Bus

The following subsystem elements are interfaced to the RAID controller over a non-

user-serviceable I

C bus:

• Cooling fan modules

• PSUs

• Temperature sensors

1.3.2 LED Indicators

The following active components come with LEDs to indicate the status of the

individual components:

• RAID controller

• LCD panel

• Cooling fan module

• PSU module

• BBU module

• Drive trays

1.3.3 Firmware and RAIDWatch GUI

Firmware: The firmware is pre-installed software that is used to configure the

subsystem. The firmware can be accessed either through the LCD keypad panel or a

Subsystem Monitoring

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

terminal emulation program running on a management computer that is connected to

the subsystem’s serial port.

RAIDWatch: RAIDWatch is a premier web-based graphical user interface (GUI) that

can be installed on a remote computer and is used to access the array through LAN or

the Internet. The manager communicates with the array via the connection of the

existing host interface or Ethernet link to the RJ-45 LAN port.

1.3.4 Audible Alarms

The subsystems come with audible alarms that are triggered when certain active

components fail or when certain (controller or subsystem) thresholds are exceeded. If

you hear hastily repeated beep tones from the subsystems it is imperative that you

immediately determine and rectify the problem.

Event notification messages indicate the completion of or the condition when

proceeding with array configuration tasks and are always accompanied by two or

three successive and prolonged beeps.

WARNING!

Failing to respond when a critical alarm is heard can lead to permanent damage of

the subsystem. When an audible alarm is heard, rectify the problem as soon as

possible.

1.4 Hot-Swappable Components

1.4.1 Hot-Swap Capabilities

The EonStor A12U-G2421 and A08U-G2421 subsystems come with a number of

hot-swappable components. A hot-swap component is one that can be exchanged

while the subsystem is still online without affecting the operational integrity of the

subsystem. These components should only be removed from the subsystem when

they are being replaced. At no other time should these components be removed from

the subsystem.

1.4.2 Components

The following components are all hot-swappable:

• Power supply units (PSUs)

• Cooling fan modules

• Hard drives

• BBU module

Hot-Swappable Components

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Chapter 1: Introduction

1.4.3 Normalized Airflow

Proper subsystem cooling is referred to as “normalized” airflow. Normalized airflow

ensures the sufficient cooling of the subsystem and is only attained when all

components are properly installed. Therefore, a failed component should only be hot-

swapped when a replacement is available. If a failed component is removed but not

replaced, permanent damage to the subsystem can result.

Hot-Swappable Components

Chapter 2

Hardware Installation

2.1 Introduction

This chapter gives detailed instructions on how to install the subsystem. When

installing the subsystem, it is necessary to mount the chassis into a rack or cabinet

and to install hard drives and drive trays. Installation into a rack or cabinet should

occur before the hard drives or drive trays are installed into the subsystem. Please

confirm that you received all of the components listed on the Unpacking List that

came with the subsystem before proceeding with the installation process.

CAUTION!

Please note that the installation instructions described in this chapter should be

carefully followed to prevent any difficulties and damages to your system.

2.2 Installation Prerequisites

1. Static free installation environment: The subsystems must be installed in a

static-free environment to minimize the possibility of electrostatic discharge

(ESD) damage. (See Section 2.3).

2. Component check: Before installing the subsystems, you should first check to

see that you have received all the required components. (See Section 2.4) If any

items appear damaged, contact your vendor for a replacement.

3. Hard drives: Hard drives must be purchased separately prior to the subsystem

installation. (See Section 2.9 for installation instructions)

4. Cabling:

(1). The subsystems come with an external VHDCI-to-VHDCI SCSI round cable

to connect the subsystem to a host computer. All other SCSI cables that are

used to connect to a second host computer or external devices must be

purchased separately. Please see Chapter 4 for sample topologies and

configuration options.

2-1

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

(2). One (1) audio-jack-to-DB9 cable is provided to facilitate the connection of

the COM1 port for local terminal emulation access to the array.

(3). Two (2) power cords are provided for the power connections to the power

sources.

(4). The RJ-45 Ethernet cable for network management connection is a user-

supplied item.

5. Memory module: If you wish to change the pre-installed memory module, a

separately purchased module must be installed. Please contact your vendor for a

different memory module or consult the list of compatible modules.

6. BBU module: If you wish to use a BBU module, the module can be purchased

separately.

7. Rack installation: The enclosure chassis can be installed into a rack cabinet

using self-purchased mounting rails, or Infortrend’s IFT-9272CEslide28 or IFT-

9272CEslide36 rails. (See Section 2.7) A printed copy of installation guide is

provided with the slide rails package.

2.3 Safety Precautions

2.3.1 Precautions and Instructions

1. Be sure the correct power range (100-120 or 220-240VAC) is supplied by your

rack cabinet, UPS device, or power outlet.

2. Thermal notice: All drive trays (even if they do not contain a hard drive) must be

installed into the enclosure. Leaving a drive bay or module slot open will

severely affect the airflow efficiency within the enclosure, and will consequently

lead to system overheating. Keep a faulty module in place until you have a

replacement unit and you are ready to replace it.

3. An enclosure without disk drives can weigh over 25 kilograms. Two (2) people

are required to install or relocate the subsystem. To avoid damage to disk drives,

drives should be removed from the enclosure before moving the subsystem.

4. Handle the system modules by the retention screws, extraction levers, or the

modules metal frames/faceplates only. Avoid touching the PCB boards,

connector pins, and soldered surfaces.

5. Airflow considerations: The subsystem requires an airflow clearance especially

on the front and rear. For proper ventilation, a minimum of 2.5cm is required

between the front of the enclosure and rack cover; a minimum of 5cm is required

between the enclosure and end of the rack.

Safety Precautions

2-2

Chapter 2: Installation

6. None of the covers or replaceable modules should be removed in order to

maintain compliance with safety, emission, or thermal requirements.

7. Always secure every enclosure module by its retaining screws or make sure it is

held in place by its latches.

8. Always make sure the subsystem has a safe electrical earth connection via power

cords or chassis ground by the rack cabinet.

9. Be sure that the rack cabinet in which the subsystem chassis is to be installed

provides sufficient ventilation channels and airflow circulation around the

subsystem.

10. Provide a soft, clean surface to place your enclosure on before working on it.

Servicing the enclosure on a rough surface may damage the finish of the chassis.

11. If it is necessary to transport the subsystem, repackage all disk drives separately.

If using the original package material, all other modules can stay within the

enclosure.

2.3.2 Static-Free Installation

The subsystem contains static-sensitive electronic components that can be damaged

by improper handling and electrostatic discharge (ESD). To prevent ESD damage to

any of the components, follow these precautions before touching or handling them:

• Discharge the static electricity from your body by wearing an anti-static

wristband or by touching a grounded metal surface.

• Avoid carpets, plastic, vinyl, and styrofoam in your work area.

• Handle all components by holding their edges or metal frame. Avoid touching

PCB boards and connector pins.

2.3.3 BBU Warnings and Precautions

The BBU module is an optional item that can sustain cache memory in the event

of a power failure or in the unlikely event if both PSUs have failed. Having the

protection to cached data by a BBU is highly recommended. The BBU provides

additional data security and helps minimize the chance of data loss during power

outage.

• Replace the BBU once it shows symptoms failing to hold the charge.

Although the life expectancy of a BBU is determined by the times it has

been charged or discharged, a BBU can approximately last for one year. If

the battery recharge time is obviously longer than the suggested 12 hours, or

if the fault LED is lit, replace the battery.

Safety Precautions 2-3

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

• Install or replace the BBU module only with a BBU module supplied by

your subsystem vendor. Use of battery cells provided by another source will

void our warranty.

• Always dispose of discharged or used batteries in an ecologically

responsible manner. Dispose used BBUs at authorized battery disposal sites

only.

• Do not use nor leave the BBU near a heat source or direct sunlight. Heat can

melt the insulation and damage other safety features of battery cells,

possibly leading it to acid leak and result in flames or explosion.

• Do not immerse the BBU in water nor allow it to get wet. Its protective

features can be damaged. Abnormal chemical reactions may occur, possibly

causing functional defects, acid leak, and other hazardous results.

• Do not disassemble or modify the BBU. If disassembled, the BBU could

leak acid, overheat, emit smoke, burst and/or ignite.

• Do not pierce the BBU with a sharp object, strike it with a hammer, step on

it, or throw it. These actions could damage or deform it, internal short-

circuiting can occur, possibly causing functional defects, acid leaks, and

other hazardous results.

• If the BBU leaks, gives off a bad odor, generates heat, becomes discolored

or deformed, or in any way appears abnormal during use, recharging or

storage, immediately remove it from the subsystem and stop using it. If this

is discovered when you first use the BBU, return it to Infortrend or your

system vendor.

2.4 General Installation Procedure

Following all the instructions provided below can save installation time. Detailed,

illustrated instructions for each component are given in the following sections.

CAUTION!

To ensure that your system is correctly installed, please follow the steps outlined

below. If you follow these steps, installation will be fast and efficient. If you do

not follow these steps, you may have incorrectly installed the hardware.

Step 1. Unpack: Unpack the subsystem and confirm that all the

components on the Unpacking Checklist have been included.

General Installation Procedure

2-4

Chapter 2: Installation

Step 2. Install an optional BBU: a battery backup unit is highly

recommended for its protection to data integrity. It should be

installed prior to operating the subsystem. (See Section 2.8)

Step 3. Rack/Cabinet installation: If the subsystem is going to be installed

in a rack or cabinet, it should be installed prior to installing the hard

drives. Installing the subsystem into a rack or cabinet requires at

least two (2) people.

Step 4. Install hard drives: Separately purchased SATA-II hard drives

must be individually installed into the drive trays. (See Section 2.9)

Step 5. Install drive trays: After the hard drives have been installed into the

drive trays, the drive trays must be installed into the enclosure itself.

(See Section 2.10)

Step 6. Cable connection: Use the power cords that came with the

subsystem to connect the subsystem to the main power source. Use

self-purchased SCSI cables (see Chapter 4 for more details) to

connect host ports to servers.

Step 7. Power up: Once the components have been properly installed and

all cables are properly connected, you can power up the subsystem

and configure the RAID array. (See Section 4.4)

2.4.1 Installation Procedure Flowchart

Figure 2-1 shows a flowchart of the installation procedure. As you complete each

step, check off the “Done” box on the right. Please use this flowchart in conjunction

with the instructions that follow.

General Installation Procedure 2-5

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 2-1: Installation Procedure Flowchart

2.5 Unpacking the Subsystem

Use the unpacking checklist in your package to check packing contents. Carefully

check the items contained in each box before proceeding with installation.

Each packed box is separated into the upper and lower levels.

Upper level: The boxes on the upper level contain:

• Eight (8) or twelve (12) drive canisters

• Accessory items

Lower level: The lower box should contain the enclosure chassis with all the pre-

installed components. The pre-installed components should include:

• RAID controller module

• PSU modules

• LCD panel

• Cooling fan modules

• A backplane

Accessory items are placed in a box on the upper level. They include two power

cords, a null modem, screws, an audio jack cable, a VHDCI-to-VHDCI external

SCSI round cable, a printed copy of Quick Installation Guide and an Unpacking

Checklist and a product utility CD containing the Installation and Hardware

Reference Manual (this document), Generic Operation (Firmware) Manual,

RAIDWatch GUI software and RAIDWatch User’s Manual.

Unpacking the Subs

stem

2-6

Chapter 2: Installation

2.6 Installation Overview

2.6.1 Pre-installed Components

The following components have been pre-installed in the EonStor subsystems and

therefore do not need to be installed.

• 2 - PSU modules

• Cooling fan modules: 3 for A12U-G2421 (12 drive bays), or 2 for A08U-

G2421 (8 drive bays)

• 1 - RAID controller module

• 1 - Memory DIMM module (mounted on the controller)

• 1 - LCD keypad panel

• 2 - foldable forearm handles

• 1 - backplane

2.6.2 Uninstalled Components

You must install the following components:

• Hard drives (separately purchased disk drives)

• SCSI cables

• A separately purchased BBU (a BBU is shipped in a different package)

2.7 Rackmounting

The subsystem is easily installed into a standard 19-inch rack cabinet using the

mounting holes on the sides of chassis.

The enclosure chassis can be installed using self-purchased mounting rails, or

Infortrend’s IFT-9272CEslide28 and IFT-9272CEslide36 rails.

2.7.1 Considerations for Installation Site and Chassis

• Make sure you have an appropriate site location and cables prepared with

adequate lengths to connect to main power and other devices.

• At least two people will be required to install the chassis. Disk drives should

only be installed after the chassis is properly mounted. The chassis can weigh

about 24Kgs without disk drives.

• The following tools are necessary for mounting the chassis:

 #4 Phillips-head screwdriver

Installation Overview 2-7

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

 Wrenches may be necessary, depending on the rack type

• Use the included M5 or M6 screws for securing the chassis through its front

mounting ears.

• More details about the use of optional slide rails are given in the Installation

Guide that came with the slide rail package.

2.7.2 Mounting Holes Positions

• Integrators may design their own brackets or slide rails using the twenty-two

(22) mounting holes on the sides of chassis.

• There are six (6) mounting holes with six (6) M4 nuts near the end of the chassis

on each side. Shown below are the locations of these mounting holes. (See the

arrow marks in Figure 2-1). See the next diagram for another group of mounting

holes on a horizontal line.

Figure 2-1: Enclosure Side Mounting Holes (1)

• Figure 2-2 shows holes that are designed for slide rail options. There are five (5)

mounting holes for #6-32 screws on the sides of the enclosure for use with slide

rails purchased separately from Infortrend or other vendors.

• You may purchase Infortrend’s slide rail options (P/N: IFT-9272CEslide28 &

IFT-9272CEslide36). For information on installing the chassis using the slide

rails, please refer to the Installation Guide that came with the kit.

Figure 2-2: Enclosure Side Mounting Holes (2)

• Use M5 or M6 pan-head screws to secure the chassis to the front cabinet posts.

The front ear holes are shown in Figure 2-3.

Figure 2-3: Front Ear Holes

Rackmountin

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Chapter 2: Installation

2.8 BBU Installation

2.8.1 BBU Module Installation Overview

The BBU module is an optional item that can sustain cached data in the event of a

power outage or in the unlikely event that both PSUs have failed. Purchasing and

installing a BBU is highly recommended. The optional BBU provides additional data

security and helps minimize the chance of data loss during power shutdowns.

The BBU module is inserted into the subsystem in the module slot at the upper left

corner of the controller module. The BBU module is secured to the subsystem with

two (2) retention screws. When shipped, the BBU module slot in the subsystem rear

panel is covered with a metal dummy plate that must first be removed.

2.8.2 Installation Procedure

To install a BBU into the subsystem, please follow these steps:

Step 1. Using a screwdriver, loosen the two (2) retention screws located on

both sides of the dummy plate. (See Figure 2-2)

Figure 2-2: Loosening the Metal Sheet Retention Screws

Step 2. Once the retention screws are loosened, wedge a screwdriver

between the back of the dummy plate and the interior wall of the

subsystem enclosure. Gently lever the dummy plate out of the

enclosure. (See Figure 2-3)

Figure 2-3: Removing the BBU Slot Dummy Plate

BBU Installation 2-9

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Step 3. Install the BBU module. Align the BBU module with the BBU

module slot and gently insert the BBU module until the back of the

BBU module reaches the end of the slot.

Step 4. Secure the BBU module to the chassis. Fasten the two (2) retention

screws on the BBU module rear panel to secure the BBU module to

the chassis. (See Figure 2-4)

Figure 2-4: Installing the BBU Module

IMPORTANT!

If a BBU is added when the subsystem has already been put to use, reset the subsystem

for the configuration change to take effect. Although a BBU can be added online, the

BBU module will only be functional after a subsystem reset.

BBU Installation

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Chapter 2: Installation

2.9 Hard Drive Installation

WARNING!

1. Handle hard drives with extreme care. Hard drives are very delicate.

Dropping a drive onto a hard surface (even from a short distance) and hitting

or touching the circuits on the drives with your tools may all cause damage

to drives.

2. Observe all ESD prevention methods when handling hard drives.

3. Only use screws supplied with the drive canisters. Longer screws may

damage the drive.

2.9.1 Hard Drive Installation Pre-requisites

CAUTION!

The hard drives and drive trays should only be installed into the subsystem once

the subsystem has been mounted into a rack cabinet. If the hard drives are

installed first, the subsystem will be too heavy to place into position and the

possible impact during installation may damage your drives.

Hard drives for the subsystem must be purchased separately. When purchasing the

hard drives, the following factors should be considered:

• Capacity (MB/GB): Use drives with the same capacity. RAID arrays use a

“least-common-denominator” approach. The maximum capacity of each drive

used in the array is the maximum capacity of the smallest drive. Use drives of

the same capacity.

• Profile: The drive trays and bays of the system are designed for 3.5-inch wide

x 1-inch high hard drives. It is highly recommended that you do not try to use

drives of any other size.

• Drive type: The subsystem described in this manual can use either SATA-II or

SATA-I hard drives.

2.9.2 Drive Installation

Step 1. Place the SATA hard drive into the drive tray (as shown in Figure

2-4) making sure that the hard drive is oriented in such a way that

the drive’s SATA connector is facing the back of the drive tray.

Hard Drive Installation 2-11

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 2-4: Installing a SATA Hard Drive

Step 2. Adjust the drive’s location until the mounting holes in the drive

canister are aligned with those on the hard drive. Secure the drive

with four supplied 6/32 flathead screws. (See Figure 2-4)

WARNING!

Only use screws supplied with the drive canisters. Longer screws may damage the

drive.

2.10 Drive Tray Installation

Once the hard drives have been installed in the drive trays, the drive trays can be

installed into the subsystem.

WARNING!

All drive trays must be installed into the enclosure even if they do not contain a

hard drive. If the trays are not installed into the enclosure, the ventilation required

for cooling will be disturbed and the subsystem will overheat.

Step 1. Make sure that the hard drive is secured to the drive tray. Make sure

the key-lock is in the unlocked position. The key-lock is unlocked if

the groove on its face is in a horizontal orientation. If the groove is in

a vertical position, as shown in Figure 2-5, then the key-lock is

locked and the front flap on the drive tray cannot be opened.

Drive Tray Installation

2-12

Chapter 2: Installation

Figure 2-5: Front View of an Individual Drive Tray

Step 2. Open the front flap on the drive tray. (See Figure 2-6). To open the

flap, push the release button (shown in Figure 2-7) on the front bezel.

The front flap will open in an upward direction.

Figure 2-6: Opening Drive Tray Front Flap

Step 3. Align the drive tray with the slot in which you wish to insert it. Make

sure that it is resting on the rails inside the module slot. Once the

drive tray is lined up with the slot, gently slide it in. This should be

done smoothly and gently.

Figure 2-7: Installing a Drive Tray

Step 4. Close the front flap on the drive tray. Make sure the front flap is

closed properly. Closing the front flap ensures that the drive tray is

firmly connected to the corresponding connector on the backplane

board. If the front flap is not closed properly, the connection

between the HDD and the subsystem will not be secure. DO NOT

slam the drive tray into place! The connector pins might be

damaged. If the front flap is not closed properly, the connection

between the hard drive and the subsystem will not be secure.

Drive Tray Installation 2-13

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Step 5. Lock the flap into place by turning the key-lock until the groove on

its face is pointing down (vertical orientation). (See Figure 2-8)

Figure 2-8: Drive Tray Key-lock Rotation

Step 6. Once all drive trays are installed, the RAID subsystem will poll the

drive channels and recognize the drives and scan them in

automatically.

When powered up, you should check the LEDs on drive bezels to

ensure all drives are receiving power and are functional. All drive

LEDs should be solid green after the initialization stage.

2-14

Chapter 3

System Monitoring

This chapter provides information on how to monitor the A12U and A08U RAID

subsystems.

3.1 Subsystem Monitoring Overview

Both the EonStor A08U-G2421 and A12U-G2421 subsystems are equipped with a

variety of self-monitoring features that help to keep subsystem managers informed of

the subsystem operational status. These monitoring features provide vital feedback to

help you maintain the operational integrity of the subsystem. Prompt response to

warnings and subsystem component failure notifications will ensure safe operation of

the subsystem and help ensure the longevity of the subsystems.

Self-monitoring features include:

• Firmware (FW): The RAID controllers in the subsystems come with pre-

installed FW. The FW can be accessed using either the LCD keypad panel

or a PC running terminal software through the RS-232C (audio jack) serial

port. Device status information can be obtained from the FW. The FW

capabilities have been fully described in the “Generic Operation Manual”

that came with your subsystems. Please refer to this manual for further

information.

• RAIDWatch: RAIDWatch is a fully integrated Java based Graphical User

Interface (GUI) that came with the subsystem and can be used to monitor

and maintain the subsystem using web browsers. Connection to a

RAIDWatch station is made using the existing Ethernet ports.

The RAIDWatch Panel View can be customized to show a direct, graphical

representation of the subsystem in the content panel of the RAIDWatch

screen. Panel View allows you to quickly determine the operational status

of critical components. Detailed information for the RAIDWatch manager

is given in the RAIDWatch User’s Manual included in the Product Utility

CD that came with your subsystem.

• Configuration Client: The powerful Configuration Client sub-module can

be used to keep you informed of system events via a variety of

communication methods like email, LAN broadcast, fax, pager, MSN

messenger, ICQ, and SMS. The sub-module runs as an independent

program from RAIDWatch main program. The Configuration Client helps

prevent blind time and keeps you constantly informed as to the status of the

storage management subsystem. Instructions on how to activate the

3-1

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Configuration Client functionality are given in the RAIDWatch User’s

Manual.

• LEDs: Device-status-indicating LEDs are placed on all of the subsystems’

active components. These LEDs inform you of the integrity of a given

component or a given link. You should become familiar with the different

LEDs on the subsystem and be aware of their functions. (See Section 3.2)

• Audible Alarm: An audible alarm is present on the subsystem controller

board and will be triggered if any of a number of threatening events

occurred. These events usually jeopardize the functional and operational

integrity of the controller board and must be heeded at all times. Events

such as a breaching of the temperature threshold will trigger the alarm and

if an onsite subsystem manager is present, the manager should, using either

the LCD panel or the PC hyper-terminal, determine the cause of the alarm

and take the appropriate corrective measures. (See Section 3.3)

• Inter-Integrated Circuit (I

C): The I2C bus monitors the operational

integrity of the cooling modules, sensors for RAID controller

board/backplane temperature and voltage readings.

Subsystem monitoring is a necessary part of subsystem management. If failure

events or other disruptive events are detected and reported, the subsystem managers

must take the appropriate action to rectify the problem. Failure to act in a properly

specified manner to a system event (like overheating) can cause severe and

permanent damage to the subsystem.

3-2 Subsystem Monitoring Overview

Chapter 3: Monitoring

3.2 Status-indicating LEDs

3.2.1 Brief Overview of the LEDs

The following devices come with LEDs that inform subsystem managers about the

operational status of the component on which they are mounted. The EonStor

subsystems feature status-indicating LEDs distributed over the active components in

the following ways:

Component LED(s) per Unit Total LEDs Definition

Drive Trays

2 24 – A12U

16 – A08U

See Section 3.2.5

Controller Module

5 5 See Section 3.2.2

Ethernet Ports

2 2 See Section 3.2.3

BBU Module

(if BBU

is installed)

1 1 See Section 3.2.6

PSU Module

1 2 See Section 3.2.7

LCD Keypad Panel

3 3 See Section 3.2.4

Cooling Module

1 3 – A12U

2 – A08U

See Section 3.2.8

Table 3-1: LED Distribution

LED definitions are given in the following sections.

3.2.2 Controller Module LEDs

The rear-facing faceplate of the RAID controller module is shown in Figure 3-1 for

model A12U-G2421. The rear-facing faceplates on the two models look identical.

The LEDs are numbered from 1 to 5. There are two more LEDs on the Ethernet port.

The definitions are shown in Table 3-2 below.

Figure 3-1: A12U-G2421 Controller Faceplate

3-3

Status-indicating LEDs

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

LED Name Color Status

1 Controller

Ready

Green ON: Indicates controller is active and

operating normally.

FLASHING: Indicates controller

initialization is taking place.

OFF: Controller is not ready for operation.

2 Hst_Bsy

(Host Ports

Busy)

Green FLASHING: Activities on the host ports.

OFF: No activities on the host ports.

3 Drv_Bsy

(Drive Busy)

Green FLASHING: Activities on the drive side.

OFF: No activities on the drive side.

4 C_Dirty

(Cache Dirty)

Amber ON: Indicates that data is currently being

cached in memory or is being held up by

the BBU during a system power loss.

5 BBU_Fail Amber ON: Indicates the BBU has failed and

cannot sustain cached data.

OFF: Indicates the BBU can sustain cached

data in memory.

FLASHING: The BBU is charging.

(NOTE: The BBU is considered as an

optional module. If a BBU has not been

installed, then this LED is always off).

Table 3-2: Controller Module LED Definitions

3.2.3 Ethernet Port LEDs

Both A12U and A08U subsystems come with a RS-232C audio jack serial port that

can be used to assign a permanent IP to the subsystems. After a permanent IP address

has been assigned, an Ethernet cable can be used to connect the RJ-45 Ethernet port

to a network hub or router. This enables you to manage your subsystem locally or

remotely over TCP/IP. See Figure 3- 2 for the locations of the two LED indicators

on Ethernet port. Refer to Table 3-3 for the LED definitions.

Figure 3- 2: Ethernet Port Indicators

Link Status

ctivit

3-4 Status-indicating LEDs

Chapter 3: Monitoring

Name Color Status

Link Status Green ON: Indicates a valid connection to network

LAN Activity Green BLINKING: Indicates active transmissions

Table 3-3: Ethernet Port LED Definitions

3.2.4 LCD Keypad Panel

The LCD panel located on the front aluminum foldable handle comes with three

status LEDs. The LEDs are marked from top to bottom “PWR,” “BUSY” and

“ATTEN” and are clearly seen in Figure 3-3 below. The definitions of these LEDs

are shown in Table 3- 4. The mute button can be used to stop the alarm until the next

controller event occurs.

Figure 3-3: LCD Keypad Panel

Name Color Status

POWER Blue

ON indicates that power is being supplied to the

subsystem.

OFF indicates that no power is being supplied to the

subsystem.

BUSY White

Flashing indicates that there is activity on the

host/drive channels.

OFF indicates that there is no activity on the

host/drive channels.

ATTENTION Red

ON indicates that one or more component

failure/critical events have occurred.

OFF indicates that the subsystem and all its

components are operating normally.

Table 3- 4: LCD Panel LED Definitions

NOTE:

The LCD panel ATTEN LED will, during the power up process, be turned on. If the

subsystem boots up correctly, then the ATTEN LED will be turned off after the boot up

procedure is complete.

3-5

Status-indicating LEDs

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

3.2.5 Drive Tray LEDs

Two LED indicators are located on the right side of each drive tray. (See Figure 3- 4)

Refer to Table 3- 5 for LED definitions. When notified by a drive failure message,

you should check the drive tray indicators to find the correct location of the failed

drive. Replacing the wrong drive can cause fatal failure of a logical array.

Figure 3- 4: Drive Tray LEDs

LED Name Color Status

Drive Busy Blue ON indicates read/write activity on the drive.

OFF indicates there is no read/write activity on the drive.

Power

Status

Red/

Green

GREEN indicates that power is being supplied to the

drive.

OFF indicates no power is being supplied to the drive or

the drive tray is not properly installed. .

RED indicates drive failure or faults have occurred.

Table 3- 5: Drive Tray LED Definitions

3-6 Status-indicating LEDs

Chapter 3: Monitoring

3.2.6 BBU Module LED

The BBU module has an LED on its faceplate. (See Figure 3-5) The function is the

same as the fifth LED on the controller module. The LED is off when the BBU is

functioning normally and is able to sustain the cache memory. The LED flashes to

indicate the BBU is currently charging its battery cells. If the LED is illuminating

amber, the unit may have failed. Please contact your system vendor to verify the

problem.

Figure 3-5: BBU Module LED

3.2.7 PSU LED

Figure 3- 6: PSU LED

Each PSU comes with a single LED located just above the power switch and just

below the retention screw (see Figure 3- 6). The LED is used to indicate the

operational status of the PSU module. Please refer to the PSU LED definitions shown

in Table 3- 6.

Color Status

Flashing

Green

The power supply has not been turned on. The PSU module LED

will blink when the subsystem is connected to a power source but

has not been turned on.

Static Green The PSU is operating normally and experiencing no problems

Static Red The PSU has failed and is unable to continue providing power to

the subsystem.

OFF The power cord is unplugged or the power cord is plugged but no

power is being supplied from the power source.

Table 3- 6: PSU Module LED Definitions

3.2.8 Cooling Fan Module LED

The cooling fan module comes with a single status-indicating red LED shown in

Figure 3-7. LED definitions are given in Table 3-7.

3-7

Status-indicating LEDs

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 3-7: Cooling Fan Module LED

RED Status

OFF The cooling fan module is operating normally.

ON The cooling fan module has failed and must be replaced.

Table 3-7: Cooling Fan Module LED Definitions

The subsystem has a novel approach to stabilizing the temperature within the

subsystem: When the sensors within the enclosure detect critical working conditions,

such as high ambient temperature or the failure of any cooling or PSU module, the

system will turn the cooling fans to high speed to extract more heat. Once the

ambient temperature cools down to normal or the faulty module has been replaced,

the cooling fans return to normal speed.

3.3 Audible Alarm

Different subsystem environmental and operational parameters (i.e., temperature,

etc.) have been assigned a range of values between which they can fluctuate. If either

the upper or lower thresholds are exceeded, an audible alarm will automatically be

triggered. The alarm will also be triggered when an active component of the

subsystem fails. If the subsystem manager is onsite and hears the alarm, the manager

will have to read the error message on the LCD screen or the PC terminal in order to

determine what has triggered the alarm. After determining what has occurred, the

subsystem manager must take appropriate actions to rectify the problem.

WARNING!

When an alarm is triggered, it is necessary for you to determine the problem. If the

audible alarm is ignored and the problem is not rectified, unexpected damages may

occur.

3-8 Audible Alarm

Chapter 3: Monitoring

3.3.1 Default Threshold Values

NOTE:

The threshold values listed below are used to trigger a warning event and sound

the alarm. A different value set is reserved for triggering the cooling fans to

operate at a high rotation speed. The fan speed value set is not user-configurable.

Table 3-8 shows the default threshold values for the subsystem. If any of these values

are surpassed the alarm will sound:

Upper Threshold Lower Threshold

+3.3V +3.6V +2.9V

+5V +5.5V +4.5V

+12V +13.2V +10.8V

CPU Temperature 90ºC 5ºC

Board Temperature 80ºC 5ºC

Enclosure Ambient

Temperature

40ºC 0ºC

Table 3-8: Default Threshold Values

The controller self-monitoring thresholds in Table 3-8 are the default threshold

values. To change these pre-set values, please refer to the Generic Operation

Manual that came with your system. The values set for the subsystem’s ambient

temperature are pre-configured before shipping and cannot be changed.

3.3.2 Failed Devices

The audible alarm will be triggered if any of the following devices fail:

• Cooling fan modules

• PSU modules

• BBU modules

• Hard drives

• Components on the RAID controller

NOTE:

If the temperature exceeds a preset threshold, the BBU charger circuits will stop

charging. You will then receive a message that says “Thermal Shutdown/Enter

Sleep Mode.” When the temperature falls back within normal range, the battery

will resume charging.

3-9

Audible Alarm

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

3.4 I

C Monitoring

Module presence detection and the general working status of cooling fan and other

modules are monitored through an I2C serial bus. If any of these modules fails, the

failure will be detected and you will be notified via the various methods described

above.

3-10 I2C Monitorin

Chapter 4: Connection and Operation

Chapter 4

System Connection and Operation

This chapter introduces sample topologies, configuration options and server

connections for the EonStor subsystems and discusses both the power on and power

off procedures.

4.1 SCSI Connection Overview

The EonStor A12U and A08U subsystems support 2 SCSI host channels and 2 dual-

stack connectors featuring support for SCSI-320 protocol (also known as Ultra-320),

the latest iteration of the SCSI drive interface standard. The SCSI-320 enables

maximum data transfer rates up to 320MB/second per channel from host computers

to the subsystems or expansion systems. This is twice the bandwidth as the Ultra160

standard, allowing you optimal performance and flexibility with configuring storage

applications.

4.1.1 SCSI Cables

One SCSI cable (IFT-9270UJBODCab) is provided with each subsystem for host

connection. If you wish to connect the second host channel, a second cable must be

separately purchased. Purchase only high quality SCSI-320 cables from a reputable

manufacturer. To ensure optimum performance, it is necessary to use proper, high

quality SCSI-320 compatible cables. Failure to do so will result in downgraded

performance.

4.1.2 SCSI Port on the Controller Rear Panel

The SATA-based subsystems are equipped with two dual-stack VHDCI connectors

on the back of the enclosure. (See Figure 4- 1) Each 68-pin VHDCI connector is

specified as “Channel # In” or “Channel # Out” port.

SCSI Connection Overview

4-1

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 4- 1: SCSI Connectors on the Controller Rear Panel

4.1.3 SCSI Termination

Correct SCSI termination procedures require that the last device on the SCSI bus be

terminated. If the last device is not terminated or if devices other than the last are

terminated, erratic SCSI bus behavior may occur.

An auto-detection, on-board terminator is built into the A08/12U-G2421. You do not

need to install an external terminator when a subsystem acts as the last device in the

daisy chain configuration. The on-board terminator default is enabled. If the

subsystem is not the last device in the daisy chain configuration, the terminator will

be automatically disabled. Although it is not recommended, if you prefer to disable

the firmware setting for the on-board terminator using the LCD keypad panel on the

subsystem, RS232C terminal session, or RAIDWatch management software, the

auto-detection function is also disable.

Typically, the host computer or host adapter (SCSI card inside the PC) is the first

device and some are already terminated. When installing the A08/12U-G2421 on a

SCSI bus with other devices, be sure to observe the above rules regarding all devices

on the SCSI bus. Consult your host computer and/or host adapter manual for

additional information on correct termination procedures.

NOTE:

Leave the firmware default setting for the SCSI terminator so the auto-detection

function can be operated is recommended.

SCSI Connection Overview

4-2

Chapter 4: Connection and Operation

4.2 Host Connection Topology

4.2.1 Single Host

Figure 4-2: Single SCSI Controller Connected to a Single Host Computer

In the example shown in Figure 4-2, the SCSI ports are connected to two adapters on

a host computer to provide path redundancy. If one of the host channels becomes

disconnected, or if the cable connecting one of the host ports to the host computer is

damaged, data flow will be routed through the second path from the subsystem to the

host computer.

NOTE:

To create dual redundant data paths on the host side, you will need to install a

third-party fail-over software on the host computer.

Host Connection Topology

4-3

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

4.2.2 Dual Hosts

Figure 4- 3: Cascaded Subsystems Connected to Two Host Computers

In the example shown in Figure 4- 3, the SCSI ports are connected to different host

computers. This provides both path and host computer redundancy. If one of the host

channels becomes disconnected, or if the cable connecting one of the host ports to the

host computer is damaged, the second path can transmit data from the subsystem to

one of the host computers. Similarly, in the clustered hosts configuration, the same

array can be accessed through different data paths and downtime will be minimized.

To obtain more disk capacity, the “Out” ports are used to cascade another subsystem.

4.3 Power On

After installing all the components in the subsystem, connecting the host channels to

the host, and connecting the expansion cables to the expansion enclosures, the

subsystem is ready to be powered on.

4.3.1 Power On Checklist

BEFORE powering on the subsystem, please check the following:



Memory module: Memory module has been correctly installed on the

controller board.



BBU modules: (Option) If used, ensure that the BBU modules have been

installed correctly.

Power On

4-4

Chapter 4: Connection and Operation



Hard drives: Hard drives have been correctly installed on the drive trays.



Drive trays: ALL the drive trays, whether or not they have a hard drive,

have been installed into the subsystem.



Cable connections: The host ports on the subsystem have been correctly

connected to host computer(s).



Power cables: The power cords have been connected to the PSU modules on

the subsystem and plugged into main power.



Ambient temperature: All the subsystem components have been acclimated

to the surrounding temperature.

4.3.2 Power On Sequence

When powering on the ES subsystem, please follow the steps below:

1. Power on any expansion enclosures if applied

If you connect any expansion enclosures to the subsystem, power on those

expansion enclosures before powering on the subsystem.

2. Power on the subsystem

The subsystem should be powered on before the host computers. The power on

procedure for the subsystem is described in Section 4.3.3.

3. Host computers

Host computers should be the last devices that are turned on. Please refer to the

documentation that came with your host computers to see its own power on

procedure.

4.3.3 Power On Procedure

1. Plug in all power cords to the power connectors located at the rear of the

subsystem. Use the power cables that came with the subsystem to connect the

subsystem to the power outlet, separate power sources, or UPS devices.

2. Turn on the power supply switches for both power supply units.

3. The subsystem is now turned on and the self-test will start automatically.

4. The “Power” LED on the front LCD panel will turn blue. (See Figure 4- 4)

Power On

4-5

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 4- 4: Subsystem Power Switches

CAUTION!

Although the PSUs are redundant and a single PSU can provide sufficient power

to the system, it is advisable to turn both the power switches on. If only one PSU is

operating and fails, the whole system will crash.

4.3.4 Power On Status Check

Once the ES subsystem has been powered on, the status of the entire subsystem

should be checked to ensure that everything is running smoothly and that there are no

complications or malfunctions.

1. Controller module LEDs: The controller module LEDs should all flash green.

2. Drive tray LEDs: The LEDs of all the drive trays (that contain hard drives)

should be constantly lit green to indicate that the drives have successfully spun

up and are ready for I/Os.

3. LCD panel LEDs: The blue LED on the LCD panel should come on indicating

that power is being supplied to the system.

4. Firmware and RAIDWatch: The overall status of the system may be checked

using the terminal interface or the RAIDWatch GUI.

5. Audible alarm: If any errors occur during the initialization process, the onboard

alarm will sound in a hastily repeated manner.

Drive tray LEDs should normally start flashing during the initialization stage,

indicating the RAID controller unit is attempting to access the hard drives.

NOTE:

The subsystem has been designed to run continuously. If a hot-replaceable

component fails, the fault can be corrected online.

Power On

4-6

Chapter 4: Connection and Operation

4.3.5 LCD Screen

When powering on the subsystem, the following messages should appear on the front

panel LCD screen. Wait for the front panel LCD to show “READY” or “No Host

LUN” before the host boots up. Refer to Figure 4- 5 on how to read the screens.

Figure 4- 5: The LCD Initial Screen

Model Name

Status/Data Transfer Indicator

Ready

A12U-G2421

The LCD screen startup sequence is shown and described in the sequence below:

This screen appears when the PSUs are turned on.

Proceeding with controller self-test.

Self-test completed.

Verifying installed cache memory.

System is ready. You can now start to configure

the subsystem.

Initializing….

Please Wait...

Power on Self

Test, Please Wait...

Power on Self

Test Completed

A12U–G2421

128MB RAM, Wait…

A12U–G2421

No Host LUN

Power On

4-7

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

4.4 Power Off Procedure

If you wish to power down the subsystem, please follow these steps:

NOTE:

If you wish to power down the subsystem, please ensure that no time-consuming

processes, like “Regenerate Logical Drive Parity” or a “Media Scan,” are taking

place.

1. Stop I/O access to the system

Stop all I/O accesses from the host computers to the subsystem. Please refer to

the related documentation of your host applications and operating system.

2. Disconnect the host

The host must be disconnected from the subsystem. To do this, disconnect the

cables from both the host and the subsystem.

3. Flush the cache

Use the “Shutdown Controller” function to flush all cached data. This prepares

the RAID subsystem to be powered down.

4. Turn off the power

Turn off the power switches at the power supply modules. Once the RAID

subsystem has been powered down, other devices that are connected to the

subsystem can be powered down.

Power Off Procedure

4-8

Chapter 4: Connection and Operation

CHAPTER 4 SYSTEM CONNECTION AND OPERATION ......................................................1

4.1

SCSI C

ONNECTION

VERVIEW

.................................................................................................1

4.1.1 SCSI Cables.............................................................................................................................1

4.1.2 SCSI Port on the controller rear panel....................................................................................1

4.1.3 Points of Failure...................................................................... Error! Bookmark not defined.

4.1.4 SCSI Termination ....................................................................................................................2

4.2

OST

ONNECTION

OPOLOGY

.................................................................................................3

4.2.1 Single Host...............................................................................................................................3

4.2.2 Dual Hosts...............................................................................................................................4

4.3

OWER

................................................................................................................................4

4.3.1 Power On Checklist.................................................................................................................4

4.3.2 Power On Sequence.................................................................................................................5

4.3.3 Power On Procedure...............................................................................................................5

4.3.4 Power On Status Check ...........................................................................................................6

4.3.5 LCD Screen .............................................................................................................................7

4.4

OWER

ROCEDURE

...........................................................................................................8

Figure 4- 1: SCSI Connectors on the Controller rear panel......................................................................2

Figure 4- 2: Single SCSI Controller connected to a single Host Computer..............................................3

Figure 4- 3: Single SCSI controller connected to two Host Computers ...................................................4

Figure 4- 4: ES Subsystem Power Switches.............................................................................................6

Figure 4- 5: The LCD Start-Up Screen.....................................................................................................7

Power Off Procedure

4-9

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

4.3.5 LCD Screen

When powering on the subsystem, the following messages should appear on the front

panel LCD screen. Wait for the front panel LCD to show “READY” or “No Host

LUN” before the host boots up. Refer to Figure 4- 11 on how to read the screens.

Figure 4- 11: The LCD Initial Screen

Model Name

Status/Data Transfer Indicator

Ready

A12U-G2421

The LCD screen startup sequence is shown and described in the sequence below:

This screen appears when the PSUs are turned on.

Proceeding with controller self-test.

Self-test completed.

Verifying installed cache memory.

System is ready. You can now start to configure

the subsystem.

Initializing….

Please Wait...

Power on Self

Test, Please Wait...

Power on Self

Test Completed

A12U–G2421

128MB RAM, Wait…

A12U–G2421

No Host LUN

Power On

4-10

Chapter 4: Connection and Operation

4.4 Power Off Procedure

If you wish to power down the subsystem, please follow these steps:

NOTE:

If you wish to power down the subsystem, please ensure that no time-consuming

processes, like “Regenerate Logical Drive Parity” or a “Media Scan,” are taking

place.

1. Stop I/O access to the system

Stop all I/O accesses from the host computers to the subsystem. Please refer to

the related documentation of your host applications and operating system.

2. Disconnect the host

The host must be disconnected from the subsystem. To do this, disconnect the

cables from both the host and the subsystem.

3. Flush the cache

Use the “Shutdown Controller” function to flush all cached data. This prepares

the RAID subsystem to be powered down.

4. Turn off the power

Turn off the power switches at the power supply modules. Once the RAID

subsystem has been powered down, other devices that are connected to the

subsystem can be powered down.

Power Off Procedure

4-11

Chapter 5

System Maintenance

5.1 Overview

5.1.1 About Subsystem Maintenance

Constant monitoring and maintenance of your SATA-based subsystems will

minimize the chance of system downtime and preserve the working integrity of the

system for a longer period of time. If any of the subsystem plug-in modules fails,

they must be replaced as soon as possible.

WARNING!

Do not remove a failed component from the subsystem until you have a

replacement on hand. If you remove a failed component without replacing it, the

internal airflow will be disrupted and the system will overheat causing damage to

the subsystem.

All of the following components can be replaced in case of failure:

1. Controller module – Section 5.2

2. Memory module – Section 5.3

3. BBU module – Section 5.4

4. PSU modules – Section 5.5

5. Cooling fan modules – Section 5.6

6. Hard drives – Section 5.7.2

5.1.2 General Notes on Component Replacement

• With the exception of the RAID controller module, all the components on the

subsystems, including the PSU modules, cooling fan modules, BBU, and drive

trays are hot-swappable and can be changed while the subsystem is still in

operation.

5-1

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

• Qualified engineers who are familiar with the subsystem should be the only ones

who make component replacements. If you are not familiar with the subsystems

and not familiar with RAID subsystem maintenance in general, it is strongly

advised that you refer subsystem maintenance to a suitably qualified

maintenance engineer.

• Normalized airflow is directly dependent upon the presence of all subsystem

components. Even if a subsystem component fails, it should not be removed

from the subsystem until a replacement is readily at hand and can be quickly

installed. Removing a subsystem component without a replacement can lead to

permanent subsystem damage.

• When replacing any hot-swappable component, caution should be taken to

ensure that the components are handled in an appropriate manner. Rough or

improper handling of components can lead to irreparable damage.

• When removing a controller module from the subsystem, ensure that the power

has been turned off and that all precautionary measures, without exception, are

adhered to. The controller board contains very sensitive components and can be

easily damaged.

WARNING!

When inserting a removable module, take heed that DO NOT USE

EXCESSIVE FORCE! Forcing or slamming a module can damage the pins

on the module connectors either on the module itself or on the backplane. Gently

push the module until it reaches the end of module slot. Feel the contact

resistance and use slightly more force to ensure the module connectors are

correctly mated. If the module comes with extraction levers or retention screws,

use them to secure the module.

5.2 Replacing Controller Module Components

5.2.1 Overview

The controller module should never be removed unless the following replaceable

components need to be accessed:

• Cache memory DIMM module: If a larger capacity DIMM module is required.

• Controller module itself: If the controller module in a single-controller

model fails, it is necessary to power down the

subsystem and replace the controller.

If a DIMM module or RAID controller fails, contact your vendor immediately for a

replacement. To replace any of these components, the controller module must first be

removed from the subsystem.

5-2 Replacing Controller Module Components

Chapter 5: System Maintenance

5.2.2 Notes on Controller Module Maintenance

• The controller module contains a DIMM module. It is not recommended to re-

use the DIMM module extracted from a failed controller unless you have a

similar RAID subsystem that can be used to test the module. You can contact

your vendor for sending the failed controller in for repair.

• When replacing the controller module, it must be remembered that the controller

board is one of the most sensitive components in the subsystem. All previously

stipulated safety precautions (see Chapter 2) must be strictly adhered to. Failure

to adhere to these precautions can result in permanent damage to the controller

board, resulting in lengthy delays.

• Prior to replacing the controller module, it is imperative for your own safety to

be sure no power is being supplied to the system.

5.2.3 Removing the Controller Module

To remove the controller module:

Step 1. Stop host I/Os or host applications to avoid losing data or causing

data inconsistency.

Step 2. Turn the subsystem power off: If possible power off the subsystem in

the way described in Chapter 4. If it is not possible to do this turn off

both PSU modules and disconnect the power cords.

Step 3. Disconnect all cables: There may be a number of different cables

attached to the controller module. These cables could include SCSI

cables for host connections, an RS-232C (audio jack) cable for serial

port connection, and an Ethernet cable for network connection. Prior

to removing the controller module, all these cables should be

removed.

Step 4. Loosen the retention hand screws: Hard screws are located on both

sides of the RAID controller’s faceplate. Press these screws and use a

Phillips screwdriver to loosen them so that the controller can be

removed from chassis. (See Figure 5- 1)

Replacing Controller Module Components

5-3

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Figure 5- 1: Loosen Controller Module Retention Screws

Step 5. Pull the controller module out: Once the retention screws have been

removed; gently pull the controller module out of the subsystem

chassis.

5.2.4 Replacing the Controller Module

Step 1. Remove the failed controller module. (See Section 5.2.3 above)

Step 2. Install a DIMM module on the new controller module. (See Section

5.5)

Step 3. Insert the replacement controller. Align the controller module with

the module bay at the rear of the subsystem. Gently slide the

controller module in.

Step 5. Fasten the hand screws. Once the controller module has been

completely inserted into the subsystem chassis, secure the controller

module to the chassis by tightening the hand screws at the sides of the

controller rear panel.

Step 6. Connect the controller module cables: Reconnect all of the cables

that were previously disconnected from the controller module. These

may include SCSI cables for host and expansion connections, an RS-

232C (audio jack) cable for serial port connection, and an Ethernet

cable for network connection.

Step 7. Power on: Once the new controller module has been properly

installed and the cables have been correctly connected, turn the

subsystem power on.

5-4 Replacing Controller Module Components

Chapter 5: System Maintenance

5.3 Replacing or Upgrading Memory Modules

5.3.1 Memory Module Installation Overview



The subsystems come with a pre-installed 256MB (or above) DDR RAM

DIMM module on the controller. The controller supports one memory module

for the capacity up to 1GB. If a DDR RAM DIMM modules with a different

size is preferred or the original memory module has failed in some way, the pre-

installed module must be removed and replaced by a new one. Replacement and

installation instructions are described fully below.



The DIMM module is located on the controller board. The controller board is a

sensitive component and must be treated with care to avoid being damaged.

WARNING!

The controller board in the module contains sensitive components. Please ensure

that all anti-static precautions stipulated above are strictly adhered to. Only

qualified engineers can replace a DIMM module.

5.3.2 Selecting a Memory Module

If the memory module mounted on the controller is going to be replaced, the

following factors should be considered when purchasing replacement modules.



Pre-installed DIMM module: The subsystem comes with a 256MB DDR RAM

module pre-installed on the controller board. If you wish to change the size of

the DIMM, then a new, separately purchased DIMM can be installed.



DDR RAM DIMM modules supported. The subsystems support DDR RAM

DIMM modules with the capacities ranging from 256MB to 1GB.



Installation consideration: When installing the DIMM module, it is necessary

to handle the controller module. The controller board is more susceptible to

damage than the other components and must therefore be handled with extreme

care. All anti-static precautions specified in Section 2.3 must be strictly adhered

to.



Secure installation: When replacing the DIMM module, make sure that the new

DIMM module is firmly in place prior to installing the controller module. If the

DIMM module is not firmly in place, the subsystem will not run and the

controller will need to be removed and the DIMM module correctly installed.



Purchasing consideration: When purchasing a DDR RAM DIMM to install on

the controller board, contact your vendor for an updated list of certified

modules.

Replacing or Upgrading Memory Modules

5-5

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

5.3.3 DIMM Module Installation

WARNING!

The pre-installed modules must be removed prior to installing new memory

modules. Do this with care. Sensitive components can be damaged during the

process.

If a DIMM module fails or a DIMM module with a higher memory capacity is

required, the DIMM module must be replaced.

Step 1. Remove the controller module. See Section 5.2.3.

Step 2. Remove the previously installed DIMM module from the DIMM

socket. To do this, push the white module clips on the sides of the

DIMM module down together. By doing this, the previously

installed modules will be ejected from the DIMM socket. (See

Figure 5-2)

Figure

-2: Push Back the Module Clips on the Sides of the DIMM

Socket

Step 3. Gently retrieve the DIMM module out of the DIMM socket. (See

Figure 5-2)

Step 4. Insert the DIMM module into the DIMM socket. Align the DIMM

module with the DIMM socket. Once aligned, gently push the

DIMM module into the socket. The white clips on the sides of the

socket will close automatically and secure the DIMM module into

the socket.

5-6 Replacing or Upgrading Memory Modules

Chapter 5: System Maintenance

Figure

-3: Insert the DIMM Module

Step 5. Reinstall the controller module. After the DIMM module has been

properly installed, the controller module must be reinstalled. To do

this, align the controller module with the controller module bay. Then

gently push the controller module in the controller bay. Carefully

push the controller until you feel the contact when the board edge

connectors are mated to the backplane. Do not use force. If unusual

contact resistance is felt, try it again. Next secure the controller

module into the subsystem by fastening the hand screws on the sides.

NOTE:

When replacing a DIMM, the whole subsystem needs to be powered down.

Therefore, when replacing a DIMM, you should carefully select the time when the

replacement will be made in order to minimize the overall disruption to service.

Replacing or Upgrading Memory Modules

5-7

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

5.4 Replacing a Faulty BBU

IMPORTANT!

The BBU is hot-swappable, can be replaced while the subsystem is running.

However, a new module will only be recognized after a subsystem reset.

Carefully select the time when the reset will be made in order to minimize the

overall disruption to service.

To replace a faulty BBU, please follow these steps:

Step 1. Remove the faulty BBU module from the chassis. The BBU

module is secured to the chassis with two (2) spring screws. These

screws must be loosened. To loosen, turn the screws

counterclockwise. (See Figure 5-4)

Figure

-4: Remove the BBU Retention Screws

Step 2. Install the new BBU module. After the faulty BBU module has

been removed, the new BBU module can be installed. To do this,

align the BBU module with the empty slot, and then gently push the

BBU module into the slot. (See Figure 5-5)

Figure

-5: Install the BBU Module

Step 3. Secure the BBU module to the enclosure. Tighten the two (2)

spring screws as shown above on the back of the BBU module.

5-8 Replacing a Faulty BBU

Chapter 5: System Maintenance

Step 4. Once the new BBU module is correctly installed into the subsystem,

the LED should start flashing, indicates the BBU is being charged.

When the BBU is fully charged, the LED will go off.

5.5 Replacing a Failed PSU Module

5.5.1 Notes on PSU Module Maintenance

• Two redundant PSU modules: The subsystem comes with two 350W, fully

redundant, hot-swappable PSU modules. These modules are accessed from the

rear of the subsystem.

• Immediate replacement: When a PSU fails, it should ideally be replaced

immediately. Do not remove the PSU module unless a replacement is readily

available. Removing a PSU without a replacement will cause severe disruptions

to the internal airflow and the subsystem will overheat, possibly causing

irreparable damage to some of the subsystem components.

• PSU bracket: Each PSU module is permanently mounted in a two-level steel

bracket, creating a single unit. The PSU is located in the upper level and a

removable cooling fan module is mounted in the lower level.

WARNING!

Although the subsystems can operate using single PSU module, it is not advisable

to run the EonStor subsystems with a single PSU module for an extended period

of time.

5.5.2 Replacing the PSU Module

To replace a PSU, please follow these steps:

Step 1. Turn off the PSU and remove the power cord: Turn of the power

switches located on the right side of each power supply module. See

the diagram below.

Step 2. Once the power switches have been turned off, remove the power

cables that connect the subsystem to the main power. The power

connector is found on the left side of each power supply module.

Replacing a Failed PSU Module

5-9

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Step 3. Remove the retention screw: After the power cable has been

removed from the power connector, remove the retention screw at

the upper right side of the PSU rear-end panel. (See Figure 5- 7)

The screw is located below the extraction lever, beside the LED

indicator, and can be hidden from sight.

Figure

-6: PSU Parts Identification

Figure 5- 7: Removing the PSU Retention Screw

Step 4. Pull the extraction handle downward: Push the extraction lever at

the back of the PSU module downwards. This will dislodge the PSU

module from the subsystem. Once dislodged, gently pull the PSU

module out of the subsystem. (See Figure 5- 8).

WARNING!

• When a PSU is pulled out of the chassis, the fan module beneath the PSU is

removed from the chassis at the same time.

• Do not remove the PSU module unless a replacement is readily available.

Removing a PSU without a replacement will cause severe disruptions to the

internal airflow and the subsystem will overheat, possibly causing irreparable

damage to some of the subsystem components.

• It is recommended that the replacement procedure is completed in less than

five (5) minutes to prevent the subsystem from overheating.

5-10 Replacing a Failed PSU Module

Chapter 5: System Maintenance

Figure 5- 8: Dislodging the PSU

Step 5. Remove the cooling module: To do this, push the clips on either

side of the module rear panel together. Then gently pull the cooling

module out of the lower level of the PSU bracket. (See Figure 5-

11)

Figure 5-9: Remove the Cooling Module

Step 6. Reinstall the cooling module into the new PSU module: To do

this, align the cooling module with the lower level of the PSU

bracket and gently slide the cooling module in.

Step 7. Insert the new PSU module into the subsystem: Once the

previously removed cooling module has been installed, insert the

new PSU module into the subsystem. Make sure the extraction lever

is in its downright position so that the saddle notches on the lower

edges of the handle can lock on to the edge metal brackets along the

chassis inner walls. Push the PSU into the slot and pull the handle

upwards to secure the module.

Step 8. Reinsert the retention screw: If the PSU module is properly

installed, the back end of the module should be aligned with the

Replacing a Failed PSU Module

5-11

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

enclosure’s rear panel. To firmly secure the PSUs into place,

reinsert the retention screw.

Step 9. Reconnect the power cord and turn the power on: Plug the power

cord into the socket on the PSU module and turn the PSU module

power switch on.

5.6 Replacing a Failed Cooling Fan Module

5.6.1 Notes on Cooling Fan Module Maintenance

• Redundant cooling fan modules: The subsystems are equipped with two (2,

EonStor A08U-G2421) or three (3, EonStor A12U-G2421) redundant, hot-

swappable, single-blower cooling fan modules located in the lower PSU module

slot. These cooling fan modules control the internal operational temperature of

the subsystem and therefore their working integrity should be maintained at all

times.

• Detecting a failed cooling fan module: If a cooling fan module fails, you can be

notified of the failure by the LED located at the back of the module, an audible

alarm, the terminal event prompts, the RAIDWatch Panel View, or through the

various methods by the Configuration Client utility.

• Replacing a cooling fan module: Once you are notified that a cooling fan

module has failed, it should be replaced as soon as possible. A failed cooling fan

module should only be removed from the subsystem when you have an

immediately available replacement module that can be installed as soon as the

failed cooling fan module has been removed.

WARNING!

• The latches at the back of the cooling fan module secure the cooling fan

module into the enclosure. If these latches are broken, the warranty on the

cooling fan module will be void.

• Although the cooling fan modules are fully redundant, it is not advisable to

run the EonStor subsystems with any of the cooling fan modules missing.

Whenever a cooling fan module fails, the system is at risk of sustaining

irreparable damage.

• Keep a failed module in its enclosure bay until a replacement unit is in hand.

5.6.2 Replacing a Cooling Fan Module

The cooling fan modules are secured to the chassis with two black latches located on

the rear of the module. To replace the cooling fan module, please follow these steps:

5-12 Replacing a Failed Cooling Fan Module

Chapter 5: System Maintenance

Step 1. To remove the cooling fan module: Squeeze both side latches

towards the center of the cooling fan module and gently withdraw

the cooling fan module from the subsystem by gently pulling on the

silver handle at the bottom. (See Figure 5- 10).

Figure 5- 10: Removing the Cooling Fan Module

Release the module

using the latches

WARNING!

Forcing or slamming a module into place can damage the connector pins on the

module itself or that on the subsystem backplane.

Step 2. Install the new cooling fan module: Line the new module up with

the slot into which it will be inserted and then gently push it into the

chassis. The latches will hold the module in place.

5.7 Drive Tray Maintenance

5.7.1 Notes on Hard Drive Maintenance



Hot-swappable drive trays: The drive trays are all hot-swappable. If a hard drive fails, it

can be replaced while the subsystem is still running.



Forearm handles: If the hard drive is behind either the left or right forearm handle, make

sure that the locking mechanism on the side of the handle is first released prior to

opening the handle itself. (See Figure 5- 11) The locking mechanism must also be

released in order to close the handle. Therefore, after the new drive has been installed, it

will be necessary to release the locking mechanism on the handle prior to closing it. For

more information, please refer to Section 1.5 in Chapter 1.

Drive Tray Maintenance

5-13

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Figure 5- 11: Forearm Handle Locking Mechanism



Front flap mechanism: Do not leave a drive tray’s front flap open. The front flap and its

key-lock secure a drive tray to chassis slot. A disk drive operating with the half-open

front bezel may result in signal glitches and Data Compare Errors might ensue.



Remove drives slowly: Although the drive trays are designed to be hot-swappable, when

removing a drive tray from the subsystem, withdraw it from the chassis slowly.

Removing the drive tray too quickly may cause a drive I/O timeout.



Replacement on hand: If a hard drive has failed, make sure you have a replacement hard

drive readily available before removing the failed drive from the subsystem. Do not leave

the drive tray slot open for an extended period of time. If the drive tray slot is left

unoccupied for an extended period of time, the airflow will be disrupted and subsystem

components will overheat and may be permanently damaged.

5-14 Drive Tray Maintenance

Chapter 5: System Maintenance

5.7.2 Replacing a Failed Hard Drive

To replace a hard drive, please follow these steps:

WARNING!

Hard drives are fragile. Please always handle hard drives with extreme care. Do

not drop the hard drives; always be slow, gentle and careful when handling a hard

drive. Only handle the hard drives by the edges, avoid touching any components

or connector pins.

Step 1. Identify the drive tray that contains the hard drive that needs to be

replaced.

WARNING!

Replacing the wrong drive in an array can fatally fail a RAID configuration. You

should identify a failed drive from the RAIDWatch GUI screen, by checking the

drive slot ID in the terminal screen, by checking the LEDs on the drive tray panel,

and/or use the identify/flash drive function in firmware. Please refer to Section 1.5

in your Generic Operation Manual for details on this function.

Step 2. Open the front flap: Once the drive tray has been identified, push

the release button at the drive bezel. (See Figure 5-12) The front

bezel will automatically be lifted and the drive tray should be easily

dislodged from the chassis.

Figure 5-12: Front View of an Individual Drive Tray

Step 3. Remove the drive tray. To remove the drive tray from the

enclosure, the key-lock must be unlocked. (See Figure 5-13) To do

this, turn the key-lock on the front of the drive tray until the groove

on its face is in a horizontal orientation.

Drive Tray Maintenance

5-15

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Figure 5-13: Drive Tray Key-Lock Rotation

Step 4. Remove the drive tray along with the hard drive in it. Once the

drive tray is dislodged from the chassis, gently and carefully

withdraw the drive tray from the chassis.

Step 5. Remove the hard drive from the drive tray: Loosen the four

retention screws (two on each side) to remove the hard drive from

the drive tray.

Step 6. Install the new hard drive: Please refer to the complete hard drive

installation procedures in Section 2.9.

Figure 5- 14: Drive Tray Retention Screws

Step 7. If the failed drive is a member of a RAID 1, 3, or 5 array, once it is

replaced the subsystem should immediately start to rebuild the

array. The drive activity LEDs should start to flash.

5-16 Drive Tray Maintenance

Appendix A

Subsystem Specifications

A.1 Technical Specifications

Environmental Specifications

Humidity 5 to 95% (non condensing – operating and non-operating)

Temperature Operating: 0º to 40ºC

Non-operating: -40º to 60ºC

Altitude Sea level to 12,000ft – operating

Sea level to 20,000ft – non-operating

Power Requirements

Input Voltage 115VAC @ 6A

240VAC @ 3A with PFC

(auto-switching)

Frequency 47-63Hz

Power

Consumption

350W

Dimensions w/o front handles w/ front handles

Height 88mm 88mm

Width 446mm 482mm

Length 490mm 505mm

Package dimensions: 344H x 600W x 670D mm

A-1

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

System Weight

Net weight: 23.5kg

Gross weight: 25.0kg (without disk drives)

EMI/EMC

•

FCC Class-B

•

Safety Requirements

•

Shock

Half-sine Operating: 5G peak, 11ms duration

Non-operating: 15G, 11ms, half-sine

Vibration

Operating

0.5oct/min

Non-operating

0.5oct/min

Warning Alarms

•

LCD screen messages

•

Audible alarms

•

System LEDs

•

Event notification via the RAIDWatch Manager (LAN broadcast, email, fax,

MSN, ICQ, SMS, and SNMP traps) and RS-232C terminal display

A-2 Technical Specifications

Appendix A: Subsystem Features

A.2 Controller Specifications

A.2.1 Configuration

Specification

RAID Levels 0, 1(0 + 1), 3, 5, 10, 30, 50, JBOD, and non-RAID disk

spanning

Host OS

Compatibility Host OS independent; supports all major platforms

Host Interface 2 SCSI-320 channels via 2 dual-stacked VHDCI

connectors

Host Channels 2 pre-configured SCSI-320 host channels

Drive Interface Supports 8 (A08U) or 12 (A12U) channel connection to

3Gbps SATA-II disk drives, SATA-I backward

compatible

Drive Channels All drive channels are pre-configured, routed through a

back-end PCB and cannot be changed

Caching Mode Write-through or Write-back

Cache Memory Pre-installed 256MB (or above) DDR RAM DIMM

with/without ECC, in one DIMM socket

Number of LUN’s Up to 32 per host ID

Multiple Target

IDs/Host Channel Yes

Firmware on Flash

Memory Yes

A.2.2 Architecture

Specification

CPU IBM PowerPC 750CXr

Gigabit Ethernet One 10/100BasedT for local or remote management

access

DIMM Slot One 184-pin DDR DIMM module

ASIC Infortrend 64-bit chipset (ASIC266)

Flash ROM 32Mbit (4MB)

NVRAM 32KB with RTC

Hardware XOR Yes

Real-time Clock For event messages with time record tracking and

scheduled maintenance tasks, e.g., Media Scan.

A-3

Controller Specifications

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

A.3 Drive Tray Specifications

Specification

Height 28mm

Width 110mm

Depth 218.92mm

Key Lock Yes

A.4 Power Supply Specifications

Specification

Nominal Power 350W

DC Output 12.0V: 25A

5.0V: 25A

3.3V: 20A

Input Frequency 47 to 63Hz

AC Input 115VAC @ 6A or 240VAC @ 3A with PFC

Power Factor

Correction Yes

Hold-up Time At least 16ms at 115/230VAC full load after a loss of AC

input

Over-temperature

Protection

Auto shutdown when cooling is lost or elevated

temperature is detected; over-voltage protection is also

available.

Cooling Fans Two fans for each unit (inside PSU)

A.5 Cooling Module Specifications

Specification

Speed High or low rotation speed controlled by firmware

Max. Air Flow

(each module) High speed: 31.8 CFM

Low speed: 20.1 CFM

Input Power 9/3.12W max.

Rated Voltage DC 12V

Temperature Operating: -10 to +60ºC

Storage: -20 to +70ºC

A-4 Drive Tray Specifications

Appendix A: Subsystem Features

A.6 RAID Management

Specification

Configuration

• LCD keypad panel

• Text-based firmware-embedded utility over RS-

232C connection through the included audio jack-

to-DB-9 serial cable

• The RAIDWatch Manager program using

Ethernet connection

Performance

Monitoring Yes

Remote Control and

Monitoring Yes

Event Notification Yes (via RAIDWatch’s sub-modules, Configuration

Client or NPC)

Management

Connection In-band over Ethernet, or RS-232C

Configuration on

Disk

Configuration data stored on disk drives for logical drive

assemblies to exist after controller replacement; basic

settings, e.g., channel mode settings, are stored on

NVRAM

Failure Indicator Via audible alarm, LCD keypad panel, RAIDWatch

Manager session, event notifications, or event prompts on

terminal emulation

A.7 Fault Tolerance Management

Specification

SATA drive SMART

support Yes

Battery Back-up Option Yes

ISEMS (Infortrend Simple

Enclosure Management

Service) via I

C Interface Yes

Automatic Drive Failure

Detection Yes

Regenerate Logical Drive

Parity Yes

Bad Block Reassignment Yes

Automatic Rebuild upon

Failed Drive Replacement Yes

Automatic Rebuild on Spare

Drives Yes

Manual Clone of Suspected

Failed Drive Yes

A-5

RAID Management

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

Concurrent rebuild on

Multiple Drives in a RAID

(0 + 1) Logical Drive Yes

Salvage the 2

Temporarily

Failed Drive in a RAID 1, 3

or 5 Logical Drive Yes

Salvage the 1

Temporarily

Failed Drive in a RAID 0

Logical Drive Yes

A-6 Fault Tolerance Management

Appendix B

Spare Parts and Accessories

B.1 Spare Parts

B.1.1 Spare Parts Overview

Except the RAID controller module, all the active components in the subsystems can

be replaced while the system is running. If any of these components fails then it can,

if configured in a fully redundant mode, be hot-swapped. Spare parts for the

subsystems can be ordered separately. This section lists the model names for the

different spare parts.

B.1.2 Spare Parts List

Except the controller module, the spare parts shown below are common to both the

A08U-G2421 8-bay and the A12U-G2421 12-bay models.

Model Name Description

IFT-9273CDTray Drive tray, type-III bezel and type-II LED lightpipe.

IFT-9272CPSU Power supply module, EonStor 2U DDR-interface

subsystems, 350W capacity.

IFT-9272CFanModE Dual-speed version of cooling fan module: EonStor 2U

subsystems

IFT-9273CBT-C Battery cell pack, Li-ION battery cells

IFT-9272CHandR Right-side forearm handle for 2U subsystems

IFT-9272CHandLLCD Left-side forearm handle for 2U subsystems, an LCD

keypad panel mounted on it

Table B-1:

Spare Parts List

B-1

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

B.1.3 Controller Modules

Model Name Description

IFT-82AU24GD08 SCSI-to-SATA RAID controller module, 2 x

SCSI-320 host channels, 8 x SATA II drive

channels.

IFT-82AU24GD08-M2 SCSI-to-SATA RAID controller module, 2 x

SCSI-320 host channels, 8 x SATA II drive

channels, 256MB DDR RAM.

IFT-82AU24GD12 SCSI-to-SATA RAID controller module, 2 x

SCSI-320 host channels, 12 x SATA II drive

channels.

IFT-82AU24GD12-M2 SCSI-to-SATA RAID controller module, 2 x

SCSI-320 host channels, 12 x SATA II drive

channels, 256MB DDR RAM.

Table B-2: Controller Module List

Spare Parts and Accessories

B-2

Appendix B: Spare Parts and Accessories

B.2 Accessories and Optional Items

B.2.1 Accessories Overview

A number of accessory items are available for the EonStor A08U/A12U-G2421

subsystem. Some of these accessory items come with the subsystem; but if damaged

or if more accessory items are needed, they can be ordered separately. Available

accessory items are listed below:

B.2.2 Accessory Parts List

Model Name Description

IFT-9270UHstCab SCSI external round cable, DB68-to-VHDCI

IFT-9270UJBODCab External SCSI round cable, VHDCI-to-VHDCI

* One included in the shipping package

IFT-9270ASCab RS-232C serial cable, audio-jack to DB9

* One included in the shipping package

IFT-9011 Null modem, DB9 female to DB9 male, wires

swapped

* One included in the shipping package

IFT-9272CEslide28 Slide rails for 21"~28.5" deep racks

IFT-9272CEslide36

Slide rails for 23"~36" deep racks

Table B-3: Accessories List

B-3

Spare Parts and Accessories

Appendix C

Pinouts

C.1. SCSI Port: VHDCI Connector Pinouts

The SCSI port connector pinouts comply with specifications in T10 Working Draft, Project

1365D, SCSI Parallel Interface-4.

* NC = No Connection, * GND = Ground,

* TPWR = Terminator Power

Pin Name Pin Name

1 SD12+ 35 SD12-

2 SD13+ 36 SD13-

3 SD14+ 37 SD14-

4 SD15+ 38 SD15-

5 SDP1+ 39 SDP1-

6 SD0+ 40 SD0-

7 SD1+ 41 SD1-

8 SD2+ 42 SD2-

9 SD3+ 43 SD3-

10 SD4+ 44 SD4-

11 SD5+ 45 SD5-

12 SD6+ 46 SD6-

13 SD7+ 47 SD7-

14 SDP0+ 48 SDP0-

15 GND 49 GND

16 DIFSENS 50 GND

17 TPWR 51 TPWR

18 TPWR 52 TPWR

19 NC 53 NC

20 GND 54 GND

21 SATN+ 55 SATN-

22 GND 56 GND

23 SBSY+ 57 SBSY-

24 SACK+ 58 SACK-

25 SRST+ 59 SRST-

26 SMSG+ 60 SMSG-

C-1

EonStor A08U/A12U-G2421 Installation and Hardware Reference Manual

27 SSEL+ 61 SSEL-

28 SC_D+ 62 SC_D-

29 SREQ+ 63 SREQ-

30 SI_O+ 64 SI_O-

31 SD8+ 65 SD8-

32 SD9+ 66 SD9-

33 SD10+ 67 SD10-

34 SD11+ 68 SD11-

C.2. COM1 Cable: DB9 and Audio Jack Pinouts

Figure CT-1: Serial Port Cable CN1 and CN2 Connectors

COM 1 Cable: Connects a PC running a terminal emulation program

CN1 Pin Number Pin Name

1 Ground

2 TXD

3 RXD

CN2 Pin Number Pin Name

1 NC

2 RXD

3 TXD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 NC

♦

Pin 4 and Pin 6 are shorted

♦

Pin 7 and Pin 8 are shorted

Table C-1: COM 1 Cable, RS-232C (Audio Jack)

Pin Out Definitions

C-2 COM1 Cable: DB9 and Audio Jack Pinouts

Appendix C Pinouts

NOTE:

A null modem is used for wire-swap and is necessary for connecting in between

COM1CN2 and a PC serial port.

C.3. IFT-9011 Null Modem

Swap Pin 2 and Pin 3

Swap Pin 4 and Pin 6

Swap Pin 7 and Pin 8

Table -2: Null Modem Pinouts

C.4. Ethernet Port Pinouts

Figure -2: LAN Port Pinouts

Pin Pin Name Pin Pin Name

1 LAN_TXP 5 N2

2 LAN_TXN 6 LAN_RXN

3 LAN_RXP 7 N1

4 N2 8 N1

Table -3: Ethernet Port Pinouts

C.5. Main Power

IEC-type receptacle.

C-3

Index

Drive Trays, 3-3

dummy plate, 2-9

- A -

accessory items, 2-6

- E -

Air Flow, A-4 ejection handle, 5-10

Airflow, 2-2 electrostatic discharge, 2-1

airflow clearance, 2-2 Ethernet link, 1-14

Ambient Temperature, 4-8 ethernet port, 1-9

array identification, 1-7 Ethernet Port, C-3

audible alarm, 1-14, 3-8, 3-9 Ethernet Ports, 3-3

Audible Alarm, 3-2

Audio Jack, C-2

authorized battery disposal sites, 2-4

- F -

failover software, 4-6

- B -

firmware, 1-13

Backplane, 1-7 front cabinet posts, 2-8

BBU, 1-6, 1-8, 2-9, 4-7, 5-3 front flap, 2-13

BBU module, 1-10, 3-7 front panel, 1-4, 1-7

BBU Module LED, 3-7 fully charged, 5-9

BBU Warnings, 2-3

blower, 1-12

- G -

Generic Operation Manual, 3-1, 3-9

- C -

GUI, 1-14

Cabinet installation, 2-5

Cabling, 2-1

- H -

cached data, 3-4 handles, 5-13

capacity, 2-11 hard drive, 2-11

charge, 1-10 hard drives, 4-8, 5-1

COM 1 Cable, C-2 host connection, 4-1

component check, 2-1 Host Connection, 4-6

controller module, 1-5, 1-8, 5-1, 5-2, 5-3 host redundancy, 4-7

Controller Module, 3-3 hot-swap mechanism, 1-7

Controller Specifications, A-3 hot-swappable, 5-1

cooling fan module, 1-6, 1-12 hot-swappable components, 1-14

cooling FAN module, 3-7

cooling fan modules, 1-5

- I -

cooling FAN modules, 5-1 I

C, 3-2, 3-10

Cooling Module, 3-3

I2C bus, 1-13

Cooling Module Specifications, A-4

Cooling Modules, 1-2 Input Voltage, A-1

CPU, A-3 international transportation regulation, 1-10

- D - - K -

data flow, 4-6 Key Components, 1-3

DB9, C-2 Key-Lock, 5-16

DIMM, 5-3

DIMM module, 5-2, 5-6

- L -

DIMM socket, 5-6 LAN Port LED, 3-4

drive bay, 1-5 LCD, 4-10

drive bays, 2-11 LCD panel, 1-7

drive IO timeout, 5-14 LCD Panel, 1-2, 1-4

drive numbering sequence, 1-5, 1-8, 1-9 LCD Screen, 4-10

drive tray, 2-12, 4-8 LED, 1-13

drive trays, 2-5, 2-11

Index I

-1

EonStor A08U-C2411 Installation and Hardware Reference Manual

lower level, 2-6

- M -

media scan, 4-11

memory module, 4-7

mini-SCSI connector, 1-9

Model Variations, 1-2

- N -

normalized airflow, 1-15, 5-2

Null modem, C-3

- P -

Package dimensions, A-1

PATA drives, 2-11

path redundancy, 4-6, 4-7

Phillips-head screwdriver, 2-9

power cable, 4-8

power cord, 1-11, 2-6

power down, 4-11

power on, 4-7

Power On, 4-7

power socket, 1-11

Power Supply Specifications, A-4

power switch, 1-11

pre-installed components, 2-6

PSU, 1-2, 1-5, 1-6, 1-11, 5-1, 5-9

PSU Bracket, 5-9

PSU Module, 3-3

- R -

Rack Installation, 2-2

Rackmounting, 2-7

RAID Controller Unit, 1-2

RAIDWatch, 1-14

Rear Brackets, 2-8

rear panel, 1-5, 1-6, 1-7

Regenerating logical drive parity, 4-11

Retention Latch, 1-7

retention screws, 5-8

RJ-45 cable, 2-5

RJ-45 port, 1-9

RS-232C (Audio Jack) serial port, 1-10

- S -

SATA drives, 2-11

SCSI cable, 4-1

sensors, 3-8

Shutdown Controller, 4-11

single host, 4-6

startup sequence, 4-10

static free, 2-1

Status Check, 4-9

System Dimensions, A-1

System Weight, A-2

- T -

terminal emulation program, 1-14

terminal management, 1-10

threshold values, 3-9

- U -

under charge, 3-4

upper level, 2-6

- V -

ventilation clearance, 2-2

- W -

Warning Alarms, A-2

- X -

XOR, A-3

I-

-2 Index

Infortrend A12U A08U G2421 Users Manual A08_12U_G1410_Front

A12UA08U-G2421 to the manual 5a28abc7-b2cb-461a-ba04-eb196399748d

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