Sun Microsystems 2500 Users Manual StorageTek Series Array Hardware Installation Guide

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Sun StorageTek™ 2500 Series Array Hardware Installation Guide

Sun Microsystems, Inc.

www.sun.com

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Sun StorageTek™2500 Series Array

Hardware Installation Guide

Part No. 820-0015-10

March 2007

Please

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L’ABSENCE DE CONTREFAÇON.

iii

Contents

Preface xiii

1. Tray Overviews 1

Front-Access Components of the Trays 2

LEDs on the Front of the Trays 3

Rear-Access Components of the Trays 5

Controllers 6

Sun StorageTek 2540 Array 6

SFP Transceivers 7

Sun StorageTek 2530 Array 8

Controller Tray and Drive Expansion Tray Power-Fan Assembly 9

Sun StorageTek 2501 Array 10

Drive Expansion Tray IOM 10

Drive Expansion Tray IOM Connectors 10

LEDs on the Rear of the Trays 11

Controller LEDs on the Sun StorageTek 2540 Array 11

Controller LEDs on the Sun StorageTek 2530 Array 12

Controller Tray and Drive Expansion Tray Power-Fan Assembly LEDs 13

IOM LEDs on the Sun StorageTek 2501 Array 15

Disk Drives 16

iv Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

LEDs on the Disk Drives 18

Common Array Manager Software 19

Service Advisor and Customer-Replaceable Units 19

Overview of the Installation Process 20

2. Installing Trays 23

Preparing for the Installation 24

Preparing the Universal Rail Kit 24

Unpacking the Universal Rail Kit 24

Loosening the Rail Adjustment Screws 24

Preparing the Tray 25

Preparing the Cabinet 26

Planning the Order of the Tray Installation 26

Attaching the Rails to a Cabinet 27

Attaching the Universal Rail Kit to a Standard Sun or 19-Inch Cabinet With

Threaded Cabinet Rails 27

Attaching the Universal Rail Kit to a Standard

19-Inch Cabinet With Unthreaded Cabinet Rails 31

Installing a Tray in a Cabinet 37

Connecting the Power Cables 42

Intertray Cabling 42

Array Configuration Naming Convention 43

Connecting Expansion Trays 44

Cabling an Expansion Tray to a Controller Tray 45

Cabling an Expansion Tray to Another Expansion Tray 45

Drive Module Cable Labeling 47

Example Label Abbreviation 47

Simplex Configurations 47

Next Steps 48

Contents v

3. Connecting the Management Host and Data Hosts 49

Connecting the Management Host 49

Attaching the Ethernet Ports to the LAN of the Management Host 50

Attaching the Ethernet Ports to the Management Host Using an Ethernet

Hub 51

Attaching the Ethernet Ports Directly to the Management Host With a Cross-

Over Cable 51

Connecting Data Hosts to the 2540 Array 51

2540 Array Data Host Connection Topologies 52

2540 Array Data Host Connections 54

▼To Connect Data Hosts Using Fibre Channel 55

Connecting Data Hosts to the 2530 Array 56

▼To Connect Data Hosts to a 2530 Array 58

Host Cable Labeling 59

Example Label Abbreviation 59

Next Steps 59

4. Powering On the Array 61

Before Powering On 61

Powering On the Array 62

Powering Off the Array 63

Next Steps 64

5. Data Hosts, HBAs, and Other Software 65

Data Host Software 65

HBAs and Drivers 65

Multipathing 66

Setting Up a Data Host On a Solaris System 66

▼To Obtain Sun Solaris 8 and 9 Data Host Software 67

▼To Install the SAN 4.4 Data Host Software 67

vi Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

▼To Obtain Traffic Manager for Operating Systems Other Than Solaris 68

Installing Data Host Software for Operating Systems Other Than Solaris 69

About Data Host Software For Non-Solaris Platforms 69

Downloading and Installing Sun RDAC Software 69

Enabling Multipathing Software 70

▼Enabling Multipathing Software for Solaris 8 or 9 OS 70

▼Enabling Multipathing Software for Solaris 10 OS 71

Next Steps 71

6. Configuring IP Addressing 73

About IP Addressing 73

Configuring the IP Address of the Array Controllers 74

Configuring Dynamic (DHCP) IP Addressing 74

Configuring Static IP Addressing 75

Using the Serial Port Interface to Assign IP Addresses 75

▼To Connect a Terminal to the Serial Port 75

▼To Set Up the Terminal Emulation Program 76

▼To Establish a Connection With the Serial Port 77

▼To Configure the IP Addresses 78

A. Configuring a DHCP Server 81

Before You Begin 81

Setting Up a Solaris DHCP Server 81

Setting Up a Windows 2000 Advanced Server 86

Installing the DHCP Server 87

Configuring the DHCP Server 87

B. Using DC Power 91

DC Power Overview 91

Installation Notes for DC Power 92

Contents vii

Ship Kit Changes 93

DC Power LEDS 93

Connecting Power Cables 94

▼Connecting the Cables 95

Turning Off the DC Power During an Emergency 96

Relocation Cautions 96

Glossary 97

Index 107

viii Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Figures

FIGURE 1-1 Sun StorageTek 2500 Series Array Product Overview 2

FIGURE 1-2 Tray Front-Access Components 3

FIGURE 1-3 Location of the LEDs on the Front of the Trays 4

FIGURE 1-4 Controller Tray Rear-Access Components 5

FIGURE 1-5 Drive Expansion Tray Rear-Access Components 6

FIGURE 1-6 Sun StorageTek 2540 Array Connectors 7

FIGURE 1-7 SFP Transceiver for the Sun StorageTek 2540 Array 8

FIGURE 1-8 Sun StorageTek 2530 Array Controller Connectors 9

FIGURE 1-9 SAS Connectors on the Drive Expansion Tray IOM 10

FIGURE 1-10 Locations of the Controller LEDs on the Sun StorageTek 2540 Array 11

FIGURE 1-11 Locations of the Controller LEDs on the Sun StorageTek 2530 Array 12

FIGURE 1-12 Locations of the Power-Fan Assembly LEDs 14

FIGURE 1-13 Locations of the IOM LEDs 15

FIGURE 1-14 Disk Drives 17

FIGURE 1-15 Locations of the Disk Drive LEDs 18

FIGURE 2-1 Loosening the Rail Screws to Adjust the Rail Length 25

FIGURE 2-2 Positioning the Front of the Left Rail Behind the Left Front Cabinet Rail 28

FIGURE 2-3 Securing the Left Rail to the Front of the Cabinet 29

FIGURE 2-4 Adjusting the Length of the Left Rail at the Back of the Cabinet 30

FIGURE 2-5 Securing the Left Rail to the Back of the Cabinet 31

xSun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-6 Inserting the Cabinet Rail Adapter Plate on the Cabinet Rail 32

FIGURE 2-7 Adapter plate in place on the Cabinet Rail. 33

FIGURE 2-8 Slide the flange of the rail behind the cabinet rail and between that and the hook of the rail

adapter plat.e, as shown. 34

FIGURE 2-9 Securing the Rail to the Front left of the Cabinet 35

FIGURE 2-10 Adjusting the Length of the Rail at the Back of the Cabinet 36

FIGURE 2-11 Securing the Rail to the Back of the Cabinet 37

FIGURE 2-12 Positioning the Tray in the Cabinet 38

FIGURE 2-13 Array Controller Tray Installed 39

FIGURE 2-14 Rail clip and rear mounting hole on rear of array tray. 40

FIGURE 2-15 Securing the Tray to the Front of a Sun Rack 900/1000 Cabinet 41

FIGURE 2-16 Expansion Ports on the Controller Tray 42

FIGURE 2-17 Expansion Ports on an Expansion Tray 43

FIGURE 2-18 1x2 Array Configuration Cabling Example 45

FIGURE 2-19 1x3 Array Configuration Cabling 46

FIGURE 3-1 Ethernet Ports for Controller A and Controller B 50

FIGURE 3-2 Direct connection from a single data host server 53

FIGURE 3-3 Direct Connection from two data host servers 53

FIGURE 3-4 Data host connection through a Fibre Channel switch 53

FIGURE 3-5 Mixed topology of data hosts connected directly and through FC switches 54

FIGURE 3-6 Connecting the SFP and Fiber-optic Cable to a 2540 Controller 55

FIGURE 3-7 FC host connectors on the 2540 controller. 55

FIGURE 3-8 Direct Connection From a Single Host With Dual HBAs 56

FIGURE 3-9 Direct connections from two data hosts with dual HBAs. 57

FIGURE 3-10 Direct connections from three data hosts with dual HBAs. 57

FIGURE 3-11 SAS Data Host Ports (on back of tray). 58

FIGURE 4-1 Tray Power Connectors and Switches 62

FIGURE B-1 Power Fan Assembly Locations. 92

FIGURE B-2 DC Power Connector Cable and Source Wires 92

FIGURE B-3 DC Power Module LEDs, Power Switch, and Power Cable Receptacle. 93

Tables

TABLE 1-1 Description of the LEDs on the Front of the Trays 4

TABLE 1-2 Descriptions of the Controller LEDs on the Sun StorageTek 2540 Array 11

TABLE 1-3 Descriptions of the Controller LEDs on the Sun StorageTek 2530 Array 12

TABLE 1-4 Descriptions of the Power-Fan Assembly LEDs 14

TABLE 1-5 Descriptions of the IOM LEDs 15

TABLE 1-6 Descriptions of the Disk Drive LEDs 18

TABLE 1-7 Disk Drive States Represented by the LEDs 19

TABLE 1-8 Sun StorageTek 2500 Series Array Hardware Installation Checklist 20

TABLE 2-1 Controller and Expansion Tray Configurations 43

TABLE 6-1 RJ45 to DIN Serial Cable Pinouts 76

TABLE B-1 DC Power Module LEDs. 94

xii Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

xiii

Preface

The Sun StorageTek 2500 Series Array Hardware Installation Guide describes how to

install rack-mounting rails and array modules on the Sun StorageTek 2500 Series

array.

Host management, data host management, and remote command line interface (CLI)

functions are performed by the Sun StorageTek Common Array Manager software.

For installation and initial configuration of the Sun StorageTek 2500 Series array,

including firmware upgrades, initial array setup, partitioning domains, configuring

storage, and configuring IP addressing, see the Sun StorageTek Common Array

Manager Software Installation Guide.

Before You Read This Book

Before you begin to install the Sun StorageTek 2500 Series array, you must have

already prepared the site as described in these books:

■Sun StorageTek 2500 Series Array Regulatory and Safety Compliance Manual

■Sun StorageTek 2500 Series Array Site Preparation Guide

xiv Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

How This Book Is Organized

Chapter 1 provides an overview of the Sun StorageTek 2500 Series array and the

hardware installation process.

Chapter 2 describes how to install rack-mounting rails, controller modules, and

expansion cabinets in three Sun cabinets.

Chapter 3 describes how to connect the management host and data hosts to enable

access to the array.

Chapter 4 describes tray power-on procedures.

Chapter 5 describes data host software and what you need to do to acquire and

install it.

Chapter 6 describes how to configure IP addressing on the local management host

and the array controllers.

Appendix A describes how to set up a DHCP server.

Related Documentation

Application Title Part Number

Site planning information Sun StorageTek 2500 Series Array Site

Preparation Guide

820-0024-nn

Late-breaking information

not included in the

information set

Sun StorageTek 2500 Series Array Release

Notes

820-0031-nn

Sun StorageTek Common Array Manager

Release Notes

820-0030-nn

Instructions for installing

the Common Array

Manager host

management software

Sun StorageTek Common Array Manager

Software Installation Guide

819-7035-nn

Quick reference

information for the CLI

Sun StorageTek 6130, 2500 Series, and

6540 Arrays sscs(1M) CLI Quick

Reference

820-0029-nn

Preface xv

In addition, the Sun StorageTek 2500 Series Array includes the following online

documentation:

■Sun StorageTek Common Array Manager online help

Contains system overview and configuration information.

■Service Advisor

Provides guided FRU replacement procedures with system feedback. You can

access Service Advisor from the Sun StorageTek Common Array Manager

software.

■sscs man page commands for the CLI

Provides help on man page commands available on a management host or on a

remote CLI client.

Accessing Sun Documentation

You can obtain Sun network storage documentation at:

http://www.sun.com/products-n-

solutions/hardware/docs/Network_Storage_Solutions

You can also view, print, or purchase a broad selection of other Sun documentation,

including localized versions, at:

http://www.sun.com/documentation

Regulatory and safety

information

Sun StorageTek 2500 Series Array

Regulatory and Safety Compliance Manual

820-0025-nn

Instructions for installing

the Sun StorageTek

Expansion cabinet

Sun StorageTek Expansion Cabinet

Installation and Service Manual

805-3067-nn

Instructions for installing

the Sun Rack 900/1000

cabinets

Sun Rack Installation Guide 816-6386-nn

Application Title Part Number

xvi Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Third-Party Web Sites

Sun is not responsible for the availability of third-party web sites mentioned in this

document. Sun does not endorse and is not responsible or liable for any content,

advertising, products, or other materials that are available on or through such sites

or resources. Sun will not be responsible or liable for any actual or alleged damage

or loss caused by or in connection with the use of or reliance on any such content,

goods, or services that are available on or through such sites or resources.

Contacting Sun Technical Support

If you have technical questions about this product that are not answered in this

document, go to:

http://www.sun.com/service/contacting

Sun Welcomes Your Comments

Sun is interested in improving its documentation and welcomes your comments and

suggestions. You can submit your comments by going to:

http://www.sun.com/hwdocs/feedback

Please include the title and part number of your document with your feedback:

Sun StorageTek 2500 Series Array Hardware Installation Guide, part number 820-0015-10.

CHAPTER 1

Tray Overviews

The Sun StorageTek 2540 Array, the Sun StorageTek 2530 Array, and the Sun

StorageTek 2501 Array are a family of storage products that provide high-capacity,

high-reliability storage in a compact configuration.

The Sun StorageTek 2540 Array is a modular, rackmountable controller tray. It is

scalable from a single dual-controller tray (1x1) configuration to a maximum

configuration of 1x3 with two additional drive expansion trays behind one controller

tray.

All three of the trays can be installed in the following cabinets:

■Sun Rack 900/1000 cabinet

■Sun StorageTek Expansion cabinet

■Any 19-inch wide, 4-post, EIA-compatible rack or cabinet with a front-to-back

depth between vertical cabinet rails of 61 cm to 91 cm (24 in. to 36 in.). The

cabinet can have threaded or unthreaded cabinet rails.

The Sun StorageTek 2540 Array and the Sun StorageTek 2530 Array contain disk

drives for storing data and controllers that provide the interface between a

management and/or data host and the disk drives. The Sun StorageTek 2540 Array

provides a Fibre Channel connection from the data host to the controller. The Sun

StorageTek 2530 Array provides a Serial Attached SCSI (SAS) connection from the

data host to the controller.

The Sun StorageTek 2501 Array drive expansion tray provides additional storage.

You can attach the drive expansion tray to either the Sun StorageTek 2540 Array or

the Sun StorageTek 2530 Array.

2Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 1-1 Sun StorageTek 2500 Series Array Product Overview

Front-Access Components of the Trays

Components that are accessed through the front of the Sun StorageTek 2540 Array,

the Sun StorageTek 2530 Array, and the Sun StorageTek 2500 Array are identical in

appearance. The disk drives in your controller tray might differ in appearance from

those shown in FIGURE 1-2. The variation does not affect the function of the disk

drives.

Expansion trays

Controller tray

Local

management host

Remote

management host

Host 1

Host 2

Host 3

Host 4

Redundant Fibre Channel

FC switch

Ethernet out-of-band

Data hosts

Host 5

Chapter 1 Tray Overviews 3

The front-access components include the following:

■End caps – Plastic, removable caps on the right and left side of the tray. Numbers

on the side of the right end cap indicate the numbering of the drives.

■LEDs (light emitting diodes) – Four LEDs located on the on the left-side end cap

■Disk drives – Twelve removable disk drives

FIGURE 1-2 Tray Front-Access Components

LEDs on the Front of the Trays

The four LEDs on the front of the Sun StorageTek 2540 Array, the Sun StorageTek

2530 Array, and the Sun StorageTek 2501 Array are identical in appearance and

function. The LEDs are located on the left-side endcap of the tray.

1. End Caps

2. Disk Drives

3. Tray LEDs

4Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 1-3 Location of the LEDs on the Front of the Trays

TABLE 1-1 Description of the LEDs on the Front of the Trays

Location LED Color On Off

1 Locate White Indicates a failed component on

this tray. The locate light is

turned on manually by CAM to

help you ﬁnd the tray that

requires attention.

Normal condition

2 Service Action

Required (Fault)

Amber A component within the tray

requires attention.

The components in the tray are

operating normally.

3Over

Temperature

Amber The tray temperature has

reached an unsafe level.

The tray temperature is within

operational range.

4 Power Green Power is present. Power is not present.

Chapter 1 Tray Overviews 5

Rear-Access Components of the Trays

Components that are accessed from the rear of the Sun StorageTek 2540 Array and

the Sun StorageTek 2530 Array controller trays include:

■Controller Modules – Two removable controller modules.

■Power-fan assembly – Two removable power supply modules with cooling fans.

The power-fan assembly is identical and interchangeable to the power-fan

assemblies used for Sun StorageTek 2501 Array drive expansion tray.

FIGURE 1-4 Controller Tray Rear-Access Components

Components that are accessed from the rear of the Sun StorageTek 2501 Array drive

expansion tray are:

■I/O Modules (IOMs) – Two removable input/output modules

■Power-fan assemblies – Two removable power supply modules with cooling

fans. The power-fan assembly is identical and interchangeable to the power-fan

assemblies used for Sun StorageTek 2540 Array and the Sun StorageTek 2540

Array.

1. Controller Modules

2. Power-Fan Assembly

Modules

6Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 1-5 Drive Expansion Tray Rear-Access Components

Controllers

The Sun StorageTek 2540 Array and the Sun StorageTek 2530 Array have two

controllers. The controllers manage the input/output (I/O) between the volumes

and the data host. The controllers have an Ethernet connection to the management

host for out-of-band management and contain a battery that provides backup power

to the 1 GB DIMM cache memory for up to three days in the event of a power loss.

Because each controller tray contains two controllers, the data path through one

controller can fail and the other controller provides a redundant data path to all of

the disk drives. If a controller fails, you can replace the failed controller while the

power is applied and the storage array is processing data (a hot swap). The system

automatically updates the firmware for the new controller so that it matches the

configuration database.

Each controller has a media access control (MAC) address that identifies it on the

network. The MAC address for a controller is on a label on the controller. The MAC

address label is attached to the controller in two places: at the top of the tray and at

the rear of the tray.

The tray ID numbers are set by the trays themselves on first power on. However,

you can change the setting through the Common Array Manager software. The tray

ID numbers on both of the controllers in one controller tray are identical under

optimal operating conditions.

Sun StorageTek 2540 Array

This Fibre Channel (FC) controller tray provides the following capabilities:

1. IOM Modules

2. Power-Fan

Assembly Modules

Chapter 1 Tray Overviews 7

■Two data host connectors per controller that can support either a fiber-optic

interface or a copper interface with 1, 2, or 4 Gb/s data host connection speed

■One drive expansion tray Serial Attached SCSI (SAS) connector with 3 Gb/s drive

expansion tray connection speed

■512-MB or 1-GB mirrored cache

■Maximum connection of 36 disk drives (one controller tray and two drive

expansion trays)

When fiber-optic cables are used to connect to the data host, a Small Form-factor

Pluggable (SFP) transceiver is required to make the connection.

FIGURE 1-6 Sun StorageTek 2540 Array Connectors

SFP Transceivers

You can connect the Sun StorageTek 2540 Array to either copper host interface cables

or fiber-optic host interface cables. If you use fiber-optic cables, you must install an

SFP transceiver in each interface connector on the controller where a fiber-optic cable

is to be installed. The SFP transceiver is required to translate the optical signals from

the fiber-optic cable into digital signals for the controller.

Note – The SFP transceiver shown might look different from those that are shipped

with your controller tray. The difference does not affect transceiver performance.

1. Drive Expansion Tray Connector

(SAS Out)

2. Ethernet Management Host

Connector

3. Fibre Channel Data Host

Connectors or Copper Data Host

Connectors

4. RS-232 Connector (Diagnostics

Port)

5. Not Used

8Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 1-7 SFP Transceiver for the Sun StorageTek 2540 Array

Sun StorageTek 2530 Array

This SAS controller tray provides the following capabilities:

■Three SAS host connectors with 3 Gb/s host connection speed

■One drive expansion tray SAS connector for the drive channel with 3 Gb/s drive

expansion tray connection speed

■512-MB or 1-GB mirrored cache

■Maximum connection of 36 disk drives (one controller tray and two drive

expansion trays)

1. Data Host Connector

2. SFP Transceiver

3. Fiber-Optic Cable

Chapter 1 Tray Overviews 9

FIGURE 1-8 Sun StorageTek 2530 Array Controller Connectors

Controller Tray and Drive Expansion Tray Power-

Fan Assembly

The power-fan assembly for the Sun StorageTek 2540 Array, the Sun StorageTek 2530

Array, and the Sun StorageTek 2501 Array is identical and interchangeable.

Note – A minimum of two disk drives must be operating in a controller tray or a

drive expansion tray to avoid generating a power-fan assembly error.

The power-fan assembly contains an integrated cooling fan. The power supply

provides power to the internal components by converting incoming AC voltage to

DC voltage. The fan circulates air inside of the tray by pulling air in through the

vents on the front of the assembly and pushing the air out of the vents on the back

of each fan.

Each tray contains two power-fan assemblies. If one power supply is turned off or

malfunctions, the other power supply maintains electrical power to the tray.

Likewise, the fans provide redundant cooling. If one of the fans in either fan housing

fails, the remaining fan continues to provide sufficient cooling to operate the tray.

The remaining fan runs at a higher speed until the failed fan is replaced. Replace the

failed fan as soon as possible.

1. Drive Expansion Tray

Connector (SAS Out)

2. Ethernet Management Host

Connector

3. SAS Data Host Connectors

4. RS-232 Connector

(Diagnostics Port)

10 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Sun StorageTek 2501 Array

The drive expansion tray expands the storage capacity of a storage array. The

controllers in the controller tray can connect to the drive expansion tray and access

the disk drives in the drive expansion tray for additional storage. A drive expansion

tray contains both physical components (disk drives, IOMs, and power-fan

assemblies) and logical components (virtual disks and volumes).

Drive Expansion Tray IOM

The drive expansion tray contains two IOMs that provide the interface between the

disk drives in the drive expansion tray and the controllers in the controller tray. The

IOM also monitors sub-system parameters. Each controller in the controller tray

connects to an IOM.

If one IOM fails, the other IOM provides a redundant data path to the disk drives.

You can replace a failed IOM while the power to the storage array is turned on and

the storage array is processing data (a hot swap).

Drive Expansion Tray IOM Connectors

The IOM connects to the controller tray and drive expansion trays with SAS cables.

Each IOM in a drive expansion tray has two SAS expansion connectors. One

connector shows an up arrow, and the other connector shows a down arrow.

FIGURE 1-9 SAS Connectors on the Drive Expansion Tray IOM

When connecting the SAS cable from an IOM in one drive expansion tray to an IOM

in another drive expansion tray, connect from a down arrow to an up arrow. If the

cable is plugged into two connectors with arrows of the same direction,

communication between the two drive expansion trays is lost.

1. SAS Connector (Up

Arrow)

2. SAS Connector

(Down Arrow)

3. Serial Connector

Chapter 1 Tray Overviews 11

LEDs on the Rear of the Trays

Controller LEDs on the Sun StorageTek 2540

Array

FIGURE 1-10 Locations of the Controller LEDs on the Sun StorageTek 2540 Array

TABLE 1-2 Descriptions of the Controller LEDs on the Sun StorageTek 2540 Array (1 of

Location LED Color On Off

1 Link Fault Amber At least one link has an error. Normal condition

2 Drive Link Green At least one link is active. At least one link has an error

3 Battery Fault Amber Indicates a fault within the

battery backup unit.

Normal condition

4 Cache Active Green Caching is enabled.

When blinking, the cache has

data.

Indicates a problem if caching is

enabled.

5 Service Action

Allowed

Blue The controller can be removed

from the controller tray.

The controller cannot be

removed from the controller

tray.

6 Service Action

Required (Fault)

Amber Indicates a fault within the

controller.

Normal condition

7 Power Green Power is present. No power is applied to the

controller tray.

12 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Controller LEDs on the Sun StorageTek 2530

Array

FIGURE 1-11 Locations of the Controller LEDs on the Sun StorageTek 2530 Array

8 Ethernet Link Green The connection is active. The connection is not active.

9 Ethernet

100BASE-TX

Green 100BASE-TX connection is

active.

The 100BASE-TX connection is

not active.

10 and 11 Host Link Green Both LEDs on indicate a 4-Gb/s

data rate from the management

software host.

Left LED on and right LED off

indicate a 1-Gb/s data rate from

the management software host.

Right LED on and left LED off

indicate a 2-Gb/s data rate from

the management software host.

Both LEDs off indicate no link

to the management software

host.

TABLE 1-3 Descriptions of the Controller LEDs on the Sun StorageTek 2530 Array (1 of

Location LED Color On Off

1 Link Green At least one link is active. All links have failed.

2 Link Fault Amber At least one link has an error. Normal condition.

3 Battery Fault Amber Indicates a fault within the

battery backup unit.

Normal condition.

TABLE 1-2 Descriptions of the Controller LEDs on the Sun StorageTek 2540 Array (2 of

Location LED Color On Off

Chapter 1 Tray Overviews 13

Controller Tray and Drive Expansion Tray Power-

Fan Assembly LEDs

The power-fan assembly LEDs for the Sun StorageTek 2540 Array, the Sun

StorageTek 2530 Array, and the Sun StorageTek 2501 Array are identical.

4 Cache Active Green Caching is enabled.

When blinking, the cache has

data.

Indicates a problem if caching is

enabled.

5 Service Action

Allowed

Blue The controller can be removed

from the controller tray.

The controller cannot be

removed from the controller

tray.

6 Service Action

Required (Fault)

Amber Indicates a fault within the

controller.

Normal condition

7 Power Green Power is present. No power is applied to the

controller tray.

8 Ethernet Link Green The connection is active. The connection is not active.

9 Ethernet

100BASE-TX

Green 100BASE-TX connection is

active.

The 100BASE-TX connection is

not active.

TABLE 1-3 Descriptions of the Controller LEDs on the Sun StorageTek 2530 Array (2 of

Location LED Color On Off

14 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 1-12 Locations of the Power-Fan Assembly LEDs

TABLE 1-4 Descriptions of the Power-Fan Assembly LEDs

Location LED Color On Off

1 DC Power (DC Good) Green DC power from the

power-fan assembly is

available.

DC power from the power-

fan assembly is not

available.

2 Service Action Allowed Blue The power-fan assembly

can be removed from the

tray.

The power-fan assembly

cannot be removed from the

tray.

3 Fault Amber A fault exists within the

power-fan assembly.

Normal condition

4 Power (AC Good) Green Power is present Power is not present

Chapter 1 Tray Overviews 15

IOM LEDs on the Sun StorageTek 2501 Array

FIGURE 1-13 Locations of the IOM LEDs

Service Action LEDs

Each controller, power-fan assembly, IOM, and disk drive has a Service Action

Allowed LED. The Service Action Allowed LED indicates when you can remove a

component safely. See the “LEDs on the Rear of the Trays” section on page 1-11 for

the locations and descriptions of the Service Action Allowed LEDs on a controller

tray and a drive expansion tray, and see “LEDs on the Disk Drives” on page 1-18 for

disk drive Service Allowed LEDs.

TABLE 1-5 Descriptions of the IOM LEDs

Location LED Color On Off

1 IOM Link Fault Amber A link error occurred. No errors have occurred.

2 IOM Link Green The link is active. A link error occurred.

Service Action

Allowed

Blue The IOM can be removed

from the drive expansion tray.

The IOM cannot be

removed from the drive

expansion tray.

Service Action

Required

(Fault)

Amber A fault exists within the IOM. Normal condition

5Power Green Power is present in the drive

expansion tray.

No power is applied to the

drive expansion tray.

16 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Caution – Potential loss of data access – Never remove a power-fan assembly, a

controller module, or a disk drive unless the Service Action Allowed LED is turned

on or you are given specific instructions to do so by the Common Array Manager

software Service Advisor.

If a module fails and must be replaced, the Service Action Required LED on that

module turns on to indicate that a service action is required. The Service Action

Allowed LED also will turn on if it is safe to remove the module. If there are data

availability dependencies or other conditions that dictate that a module should not

be removed, the Service Action Allowed LED remains off.

The Service Action Allowed LED automatically turns on or turns off as conditions

change. In most cases, the Service Action Allowed LED turns on when the Service

Action Required (Fault) LED is turned on for a module.

Note – If the Service Action Required (Fault) LED is turned on but the Service

Action Allowed LED is turned off for a particular module, you might have to service

another component first. Check the Common Array Manager software Service

Advisor to determine the action you should take.

Disk Drives

Disk drives for the Sun StorageTek 2500 Series Array have three components: a hard

drive, a hard drive carrier, and an adapter card for connecting the disk drive to the

midplane. The disk drives can be Serial Advance Technology Attachment (SATA)

disk drives, Fibre Channel (FC) disk drives, or SAS disk drives.

Controller trays or drive expansion trays hold up to 12 disk drives, for a maximum

of 36 disk drives in a storage array. To reach the maximum of 36 disk drives, the

storage array must consist of one controller tray and two drive expansion trays.

Access to disk drives is from the front of the tray.

Refer to the storage array release notes for supported drives.

Note – The disk drives in your tray might differ in appearance from those shown

here. The variation does not affect their function.

Chapter 1 Tray Overviews 17

FIGURE 1-14 Disk Drives

The physical locations of the disk drives are numbered 1 through 12, from left to

right, and from top to bottom. The right end cap has numbers on the side showing

the numbers of the adjacent drives. The Common Array Manager Service Advisor

software automatically detects a disk drive’s tray ID and slot designation.

18 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

LEDs on the Disk Drives

FIGURE 1-15 Locations of the Disk Drive LEDs

TABLE 1-6 Descriptions of the Disk Drive LEDs

Location LED Color General Behavior

Service Action

Allowed

Blue On – The disk drive can be removed from the tray.

Off – The disk drive cannot be removed from the

tray.

2Fault Amber On – The disk drive has a problem.

Off – Normal condition.

Power Green Off – The power is turned off.

On – The power is on and the disk drive is

operating normally.

On and blinking (0.5 s on, 0.5 s off) –Disk drive

I/O activity is taking place.

Chapter 1 Tray Overviews 19

Common Array Manager Software

The Sun StorageTek 2500 Series Array is managed by the Sun StorageTek Common

Array Manager software. The Common Array Manager provides web browser–

based management and configuration from an external management host, data host

software that controls the data path between the data host and the array, and a

remote command-line interface (CLI) client that provides the same control and

monitoring capability as the web browser, and is scriptable for running frequently

performed tasks.

The Common Array Manager software includes Service Advisor, an online reference

full of hardware and software configuration and troubleshooting information and

procedures.

For information about installing the Common Array Manager software and

configuring and managing the array, see the Sun StorageTek Common Array Manager

Software Installation Guide.

Service Advisor and Customer-

Replaceable Units

Customer-replaceable units (CRUs) are designed to be replaceable by customers.

TABLE 1-7 Disk Drive States Represented by the LEDs

Disk Drive State Power

(Green LED)

Fault

(Amber

LED)

Power is not applied. Off Off

Normal operation, power is turned on, no disk drive I/O activity is

occurring.

On, solid Off

Normal operation, disk drive I/O activity is occurring. On, blinking Off

Service action required, a fault condition exists, and the disk drive is

ofﬂine.

On, solid On, solid

20 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

To see a list of the hardware components that can be replaced at the customer site

refer to Service Advisor in the Sun StorageTek Common Array Manager software.

The Service Advisor also provides information and procedures for replacing array

components.

Overview of the Installation Process

Before you begin to install the array, you must do the following:

■Read the Sun StorageTek 2500 Series Array Release Notes for any late-breaking

information related to the installation of the array.

■Prepare the site as described in these books:

■Sun StorageTek 2500 Series Array Regulatory and Safety Compliance Manual

■Sun StorageTek 2500 Series Array Site Preparation Guide

The following checklist (TABLE 1-8) outlines all of the tasks required for installing the

Sun StorageTek 2500 Array hardware and tells you where you can find detailed

procedures. To ensure a successful installation, perform the tasks in the order in

which they are presented.

TABLE 1-8 Sun StorageTek 2500 Series Array Hardware Installation Checklist

Step Installation Task Where to Find Procedure

1. Unpack the cabinet and move it into

position.

Unpacking guide attached to the outside of

the shipping carton

2. Install and secure the cabinet. • Sun StorageTek Expansion Cabinet Installation

and Service Manual

• Sun Rack Installation Guide

3. Unpack the rackmounting kit and

check its contents.

“Preparing the Universal Rail Kit” on page 24

4. Unpack the tray box and check its

contents.

“Preparing the Tray” on page 25

5. Prepare the cabinet for installation. “Preparing the Cabinet” on page 26

6. Attach the rails to the cabinet. “Attaching the Rails to a Cabinet” on page 27

7. Mount the controller tray and

expansion trays in the cabinet.

“Installing a Tray in a Cabinet” on page 37

8. Attach the power cables. “Connecting the Power Cables” on page 42

9. Cable the controller tray and

expansion trays.

“Intertray Cabling” on page 42

Chapter 1 Tray Overviews 21

When the tasks in TABLE 1-8 are complete, you can install the Common Array

Manager software on an external management host, install and upgrade firmware

from the management host, and perform initial array setup and system

configuration. See the Sun StorageTek Common Array Manager Software Installation

Guide for complete information on software-related tasks.

10. Connect the management host. “Connecting the Management Host” on

page 49

11. Attach the host interface cables. “Connecting Data Hosts to the 2540 Array” on

page 51

12. Turn on the power. “Powering On the Array” on page 62

TABLE 1-8 Sun StorageTek 2500 Series Array Hardware Installation Checklist

Step Installation Task Where to Find Procedure

22 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

CHAPTER 2

Installing Trays

Use the procedures in this chapter to install trays in a cabinet. The number of trays

you need to install depends on your overall storage requirements. You can install a

maximum of three trays, one controller tray and up to two expansion trays for each

array.

This chapter describes the process of installing the Sun StorageTek 2500 Series Array.

It contains the following sections:

■“Preparing for the Installation” on page 24

■“Attaching the Rails to a Cabinet” on page 27

■“Installing a Tray in a Cabinet” on page 37

■“Connecting the Power Cables” on page 42

■“Intertray Cabling” on page 42

■“Drive Module Cable Labeling” on page 47

■“Next Steps” on page 48

The installation procedures in this chapter require the following items:

■#2 Phillips screwdriver (minimum 4-inch length recommended)

■#3 Phillips screwdriver (minimum 4-inch length recommended)

■Antistatic protection

Caution – Electrostatic discharge can damage sensitive components. Touching the

array or its components without using a proper ground might damage the

equipment. To avoid damage, use proper antistatic protection before handling any

components.

24 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Preparing for the Installation

Use the following procedures to prepare for installation:

■“Preparing the Universal Rail Kit” on page 24

■“Preparing the Tray” on page 25

■“Preparing the Cabinet” on page 26

Preparing the Universal Rail Kit

Use the universal rail kit to mount the Sun StorageTek 2500 Series Array trays in any

of the following cabinets:

■Any standard Sun cabinet, such as the Sun Rack 900/1000 cabinet

■Any 19-inch wide, 4-post, EIA-compatible rack or cabinet with a front-to-back

depth between vertical cabinet rails of 24-36 inches (with threaded or unthreaded

cabinet rails).

■The Sun StorageTek Expansion cabinet

Unpacking the Universal Rail Kit

Unpack the universal rail kit and check the contents.

The universal rail kit (part number 594-2489-02) comes with pre-assembled rails and

contains the following items:

■Left rail assembly

■Right rail assembly

■10 8-32x3/8” panhead screws with lockwashers

■4 M4 flathead screws

■4 cabinet rail adapter plates (used for unthreaded cabinet rails only)

Loosening the Rail Adjustment Screws

To loosen the adjustment screws on the left and right rails:

Use a flathead screwdriver to loosen the two rail adjustment screws on each rail to

allow adjustment of each rail length (FIGURE 2-1).

Chapter 2 Installing Trays 25

FIGURE 2-1 Loosening the Rail Screws to Adjust the Rail Length

Note – The rails are preconfigured to adjust to cabinet rail depths of between 24

inches (609.6 mm) and 34 inches (863.6 mm).

Preparing the Tray

Caution – Two people are needed to lift and move the tray. Use care to avoid injury.

A traycan weigh up to 54.3 pounds (24.6 kg).

1. Unpack the tray.

2. Check the contents of the box for the following items:

■Sun StorageTek 2500 Series Arraytrays (controller or expansion)

■Ship kit for the controller tray

■One pair left and right end caps (plastic bezels)

■Four 4 Gbps FC SFPs (2 per FC Controller module)

26 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

■Two 6-meter RJ45 -RJ45 Ethernet cables (one per controller module)

■One RJ45-DIN9 cable

■One RJ45-DB9 adapter

■Sun StorageTek Common Array Manager Software CD

■Sun StorageTek Common Array Manager Software Installation Guide (on the

software CD)

■Common Array Manager sscs CLI Quick Reference Card

■Sun StorageTek 2500 Series Array Hardware Installation Guide (Hardcopy)

■Accessing Documentation guide

■Premium feature license cards (ordered optionally)

■Ship kit for each expansion tray

■Two 1-meter copper SAS cables (one per I/O module)

■Accessing Documentation guide

AC power cords are shipped separately with each tray.

Preparing the Cabinet

Select the cabinet in which you will be installing the array. Be sure the cabinet is

installed as described in the installation instructions provided with it.

1. Stabilize the cabinet as described in the cabinet documentation.

2. If the cabinet has casters, make sure the casters are locked to prevent the

cabinet from rolling.

3. Remove or open the front panel.

4. Remove or open the vented back panel.

Planning the Order of the Tray Installation

Install the trays starting with the controller tray at the lowest available 2RU tray slot

in the cabinet. Next, install the expansion trays for the first controller tray. If room

remains in the cabinet, repeat for the next controller and expansion trays.

Starting at the bottom distributes the weight correctly in the cabinet.

Chapter 2 Installing Trays 27

Attaching the Rails to a Cabinet

Depending on the type of cabinetin which you will install the tray, use one of the

following procedures to attach the rails:

■“Attaching the Universal Rail Kit to a Standard Sun or 19-Inch Cabinet With

Threaded Cabinet Rails” on page 27

■“Attaching the Universal Rail Kit to a Standard 19-Inch Cabinet With Unthreaded

Cabinet Rails” on page 31

Each tray requires two standard mounting rack units (2RU) of vertical space in the

cabinet. Each standard mounting rack unit (RU) has three mounting holes in the left

and right cabinet rails. The top mounting hole of the lower RU is always closest to

the bottom mounting hole of the upper RU, hence the divsion between RUs on a

cabinet rail is between the two closeest mounting holes in a grouping.

The universal rails have an adjustable depth of 24” to 34”.

Attaching the Universal Rail Kit to a Standard

Sun or 19-Inch Cabinet With Threaded Cabinet

Rails

This procedure describes the steps to attach the universal rail kit to:

■All standard Sun cabinets, including the Sun Rack 900/1000 cabinets

■Sun StorageTek Expansion cabinets

■All 19-inch wide, 4-post EIA-compatible racks and cabinets with the following

cabinet rail types:

■M5 threaded

■M6 threaded

■10-32 threaded

■12-24 threaded

■circular unthreaded

1. To attach the universal rail kit to a cabinet withthese cabinet rail typesPosition

the front flange of the left universal rail behind the left front cabinet rail

(FIGURE 2-2).

28 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Note – The RUs are not labeled on all racks, as they are on the Sun cabinets. The

rule of thumb to remember is that the division of RUs passes between the two

closest rail holes in each set of holes (see FIGURE 2-2).

FIGURE 2-2 Positioning the Front of the Left Rail Behind the Left Front Cabinet Rail

2. Insert the 8-32 screws through the center holes in each RU of the rack into the

top and bottom holes in the Universal rail (FIGURE 2-3).

These screws pass through the cabinet rail holes and screw into threaded holes in

the Universal rail.

Chapter 2 Installing Trays 29

FIGURE 2-3 Securing the Left Rail to the Front of the Cabinet

3. Repeat Step 1 and Step 2 for the right rail.

4. At the back of the cabinet, adjust the length of the left rail as needed to fit the

cabinet, and position the rail flange behind the face of the cabinet rail

(FIGURE 2-4).

30 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-4 Adjusting the Length of the Left Rail at the Back of the Cabinet

5. Align the rail flange so that the top and bottom mounting holes match the

center holes in the RUs corresponding to those used on the front of the cabinet.

Chapter 2 Installing Trays 31

6. Insert the 8-32 screws through the center holes of the rack into the top and

bottom mounting holes on the universal rail (FIGURE 2-5).

FIGURE 2-5 Securing the Left Rail to the Back of the Cabinet

7. Repeat Step 4,Step 5, and Step 6 for the right rail.

Attaching the Universal Rail Kit to a Standard

19-Inch Cabinet With Unthreaded Cabinet Rails

This procedure describes the steps to attach the universal rail kit to:

32 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

■All 19-inch wide, 4-post EIA-compatible racks and cabinets with unthreaded

cabinet rails (square hole racks).

To attach the universal rail kit to a cabinet with unthreaded cabinet rails, follow

these steps first for the left rail and then for the right rail:

1. Hook a cabinet rail adapter plate over the front of the cabinet rail. (FIGURE 2-6)

FIGURE 2-6 Inserting the Cabinet Rail Adapter Plate on the Cabinet Rail

Position the adapter plate over of the 2RU slot in which the tray is to be

mounted. The hook on the top of the adapter plate hooks into the top hole of the

upper RU. The flat flange on the bottom of the adapter plate fits into the bottom

hole of the lower RU (FIGURE 2-7).

Chapter 2 Installing Trays 33

FIGURE 2-7 Adapter plate in place on the Cabinet Rail.

2. Slide the front flange of the universal rail between the front cabinet rail and

the top hook of the rail adater plate (FIGURE 2-8).

34 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-8 Slide the flange of the rail behind the cabinet rail and between that and the

hook of the rail adapter plat.e, as shown.

3. Insert and tighten two 8-32 screws through the top and bottom holes in the

adapter plate, through the cabinet rail, and into the top and bottom threaded

holes in the universal rail mounting flange (FIGURE 2-9).

Chapter 2 Installing Trays 35

FIGURE 2-9 Securing the Rail to the Front left of the Cabinet

4. Repeat Step 1 through Step 3 on the corresponding cabinet rail at the back of

the cabinet (FIGURE 2-10).

Mounting the rail on the back of the cabinet is the same as mounting it to the

front, after you extend the rail the necessary length to reach the rear cabinet rail.

36 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-10 Adjusting the Length of the Rail at the Back of the Cabinet

5. Insert and tighten two 8-32 screws through the top and bottom holes in the

adpater plate, back cabinet rail, and universal rail mounting flange

(FIGURE 2-11).

The screws passes through the unthreaded holes of the adapter plate and cabinet

rail mounting rail and screw into the threaded holes of the rail mounting flange.

Chapter 2 Installing Trays 37

FIGURE 2-11 Securing the Rail to the Back of the Cabinet

For extra stability, you can tighten the rail screws as in FIGURE 2-1.

6. Repeat Step 1 through Step 5 to install the right rail.

Installing a Tray in a Cabinet

Install the controller tray in the first empty 2RU slot at the bottom of the cabinet. If

you are installing expansion trays, continue installing the trays from the bottom up.

1. Using two people, one at each side of the tray, carefully lift and rest the tray on

the bottom ledge of the left and right rails (FIGURE 2-12).

Caution – Use care to avoid injury. A tray can weigh up to 55 pounds (25 kg).

38 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-12 Positioning the Tray in the Cabinet

2. Carefully slide the tray into the cabinet until the front mounting flanges on the

tray touch the vertical face of the cabinet (FIGURE 2-13).

Chapter 2 Installing Trays 39

FIGURE 2-13 Array Controller Tray Installed

The tray has mounting flanges on both sides with three mounting holes in them. The

top and bottom holes are large enough to fit over the heads of the screws already in

the cabinet rails used to mount the universal rails. If the tray was shipped with end

caps (bezels) clipped on the tray mounting flanges, remove them before sliding the

tray all the way in over the mounting screw heads.

To remove an end cap , place your thumb on the lower front face of the cap and

reach your forefinger underneath to the back bottom edge of the cap, then pull

the cap towards you and slightly upwards.

On the rear of the array tray, a flat metal tab on each side corner slides into a special

mounting clip on the rear of each universal rail, securing the back of the array tray.

This makes the use of rear mounting screws to secure the tray in the rail

unnecessary, especially in locations where the rack and trays are not likely to be

moved. For racks that will be moved or shipped, Sun recommends that you install

M4 screws through the hole in the tab and into the corresponding threaded hole in

the rail as shown in FIGURE 2-14.

40 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 2-14 Rail clip and rear mounting hole on rear of array tray.

3. Insert a single 8-32 pan head screw through the center hole in each front

mounting flange and tighten (FIGURE 2-15).

Chapter 2 Installing Trays 41

FIGURE 2-15 Securing the Tray to the Front of a Sun Rack 900/1000 Cabinet

4. Replace the end caps (bezels) that cover the mounting flanges on the front of

the array tray.

On each front mounting flange, there is a small tab over which the end caps fit.

The end caps have a slot on top for this tab.

a. Place the end cap over the tab so the tab can go into the slot.

b. Snap the bottom of the end cap into place.

42 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Connecting the Power Cables

1. Verify that both power switches are turned off.

2. Verify that the circuit breakers in the cabinet are turned off.

3. Connect each power supply in the tray to a separate power source in the

cabinet.

4. Connect the primary power cables from the cabinet to the external power

source.

Note – Do not power on the array until you complete the procedures in this chapter.

The power-on sequence is described in detail in Chapter 4.

Intertray Cabling

This section describes how to cable a controller tray to expansion trays for several

different configurations. Each controller has one expansion port (FIGURE 2-16).

Controller A controls drive channel 1 through the A-side drive modules; Controller

B controls drive channel 2 through the B-side modules. Each drive channel provides

a separate path for data transfer from the controller tray to the expansion trays; the

two channels provide redundancy.

FIGURE 2-16 Expansion Ports on the Controller Tray

Each expansion tray has two SAS port connectors, one marked with an up arrow

and the other marked with a down arrow (FIGURE 2-17). You use SAS cables to

connect expansion trays to controllers.

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

SAS Expansion Ports to the Expansion Tray

Chapter 2 Installing Trays 43

Note – Perform all SAS connections from an Out (down arrow) port to an In (up

arrow) port. If the cable is connected to two connectors with the same arrows,

communication between the two drive modules will be lost.

FIGURE 2-17 Expansion Ports on an Expansion Tray

Array Configuration Naming Convention

The configuration naming convention is “controllers x trays” where the first number

is the controller tray and the second is the sum of the controller tray and the number

of expansion trays. For example, 1x1 is a standalone controller tray, 1x2 is the

controller tray and one expansion tray, 1x is the controller tray and 2expansion trays

(TABLE 2-1).

Note – Do not add more expansion trays than the array supports.

Use the following instructions to connect the dual-RAID controller tray to one or

more expansion trays.

TABLE 2-1 Controller and Expansion Tray Configurations

Configuration

Identifier Controller Tray

Number of Expansion

Trays

1x1 1 0

1x2 1 1

1x3 1 2

1. SAS Expansion In Port

2.SAS Expansion Out Port

22 2

44 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Connecting Expansion Trays

Keep the following points in mind when adding expansion trays to your storage

array:

■Expansion trays must be added with power to the array and I/O data transfer

turned off. If you need to add an expansion tray to an array that cannot be taken

off-line, contact your Sun Technical Support representative before attempting to

connect the new tray.

■Controller and expansion trays are shipped with protective plastic plugs in the

SAS expansion ports. You must remove these before connecting cables.

■Expansion trays are added serially, in a chain (actually two chains: channel one

through the A-side controller and modules, and channel two through the B-side

controller and modules). The SAS cable from the expansion port on a controller

connects to the In port (Up arrow) on an expansion tray drive module. The SAS

cable from a drive module on expansion tray 1 to a corresponding drive module

on expansion tray 2 connects from the Out port on expansion tray 1 to the

corresponding In port on expansion tray 2. This pattern repeats for each

additional drive module on a channel. See FIGURE 2-19 for an illustration of this

reverse cabling pattern.

■To connect cables for maximum redundancy, controller B must be cabled to the

expansion tray B-side modules in the opposite order as the expansion tray A-side

modules. That means the last drive module in the A-side chain from controller A

must be the first drive module in the B-side chain from controller B. See

FIGURE 2-19 for an illustration of cabling for maximum tray level redundancy.

■On all SAS cables, affix a label to each end of the cable. See “Drive Module Cable

Labeling” on page 47 for labeling tips.

Chapter 2 Installing Trays 45

Cabling an Expansion Tray to a Controller Tray

A Controller tray has two expansion ports, one on the Controller A module and one

on the Controller B module. To connect an expansion tray, connect an SAS cable

from each expansion port on the controller to each In port on the expansion tray.

FIGURE 2-18 shows a 1x2 array configuration consisting of one controller tray and one

expansion tray. Two SAS cables are required.

FIGURE 2-18 1x2 Array Configuration Cabling Example

To cable a 1x2 array configuration:

1. Locate the Controller A and Controller B expansion ports at the back of the

controller tray (FIGURE 2-16).

2. Locate the In and Out expansion ports at the A-side and B-side back of the

expansion tray (FIGURE 2-17).

3. Connect one SAS cable between the Controller A expansion port and the A-

side In port on the expansion tray (FIGURE 2-18).

4. Connect one SAS cable between the Controller B expansion port and the B-

side In port on the expansion tray (FIGURE 2-18).

Cabling an Expansion Tray to Another Expansion

Tray

Each additional expansion tray is added to the preceding expansion tray by

connecting SAS cables from the Out ports of the first tray to the In ports of the next

tray. FIGURE 2-19 illustrates a 1x3 array configuration consisting of one controller tray

Controller Tray

Expansion Tray

46 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

and two expansion trays. The cable connections on the B-side are reversed (the cable

from the controller A expansion port goes to the In port of expansion tray 1; the

cable from the controller B expansion port goes to the In port on expansion tray 2)

for maximum redundancy. This pattern continues for each additional tray you add.

Two more SAS cables are required for each additional tray.

FIGURE 2-19 1x3 Array Configuration Cabling

To cable a 1x3 array configuration for maximum redundancy:

1. Locate the Controller A and Controller B expansion ports at the back of the

controller tray (FIGURE 2-16).

2. Locate In and Out expansion ports at the A-side and B-side back of the

expansion tray (FIGURE 2-17).

3. Connect one SAS cable between the Controller A expansion port and the A-

side expansion In port of expansion tray 1 (FIGURE 2-19).

4. Connect one SAS cable between the Controller B expansion Out port and the

B-side expansion In port of expansion tray 2 (FIGURE 2-19).

5. Connect one SAS cable between the expansion tray 1 Out port and the A-side

expansion In port of expansion tray 2 (FIGURE 2-19).

Controller Tray

Expansion Tray 1

Expansion Tray 2

Chapter 2 Installing Trays 47

6. Connect one SAS cable between the expansion tray 2 B-side Out port and the

B-side In port of expansion tray 2 (FIGURE 2-19).

Drive Module Cable Labeling

Labels for the drive cables identify which controller ports and which expansion

connections in an expansion tray you use when you attach cables between a

controller and the drive modules on an expansion tray. Cable labels are useful if you

need to disconnect cables to service a controller. Attach a label to each end of the

cable. Use this design to create labels for drive cables:

■Controller ID (for example, Controller A)

■Expansion tray ID (for example, Tray A)

■Expansion port ID (for example, In or Out)

■Drive module ID

Example Label Abbreviation

In this example, the storage configuration has the following characteristics:

■Drive channel 1

■Controller A, drive channel 1

■Drive module 1

■Expansion Tray A (which is the left drive module), Out port

Using this design, the label includes the following information:

CtA-Dch1, Dm1-Tray_A (left), Out

Simplex Configurations

A simplex configuration is a 2530 Array with a single controller and a single

backend channel. By definition, there is a single path SAS connection to the data

host, and no redundancy is available. There can be expansion modules on the single

backend channel.

48 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Simplex cabling is the same as the cabling on a single channel of an ordinary array,

such as that shown on the A-side in FIGURE 2-18. CRU removal and replacement

procedures in a simplex configuration are the same as those for a duplex

configuration with a failed controller (with the exception of the service procedures

targeted at the failed controller). These procedures are available in Service Advisor.

Maintenance procedures such as firmware updates or servicing of the controller or

expansion modules will cause loss of access to the array during the performing of

the procedure, since there is no backup channel.

Performance and default behavior are the same as a duplex configuration with a

failed or missing controller. Write cache is by nature in write-through mode because

there is no cache mirroring possible.

Next Steps

Now you are ready to connect the management and data hosts, as described in

Chapter 3.

CHAPTER 3

Connecting the Management Host

and Data Hosts

This chapter describes Sun StorageTek 2500 Series Array cable connections for hosts.

It contains the following sections:

■“Connecting the Management Host” on page 49

■“Connecting Data Hosts to the 2540 Array” on page 51

■“Connecting Data Hosts to the 2530 Array” on page 56

■“Host Cable Labeling” on page 59

■“Next Steps” on page 59

Connecting the Management Host

The management host directly manages Sun StorageTek 2500 Series Arrays over an

out-of-band network. This section describes how to setup a connection between the

Ethernet port of a controller (FIGURE 3-1)and the management host.

50 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 3-1 Ethernet Ports for Controller A and Controller B

Note – Before you begin, ensure that the tworequired Ethernet cables are available.

These requirements are outlined in the StorageTek 2500 Series Array Site Preparation

Guide.

There are three ways to establish a connection between the management host and

Ethernet port 1 of an array controller:

■“Attaching the Ethernet Ports to the LAN of the Management Host” on page 50

■“Attaching the Ethernet Ports to the Management Host Using an Ethernet Hub”

on page 51

■“Attaching the Ethernet Ports Directly to the Management Host With a Cross-

Over Cable” on page 51

Attaching the Ethernet Ports to the LAN of the

Management Host

To attach the Ethernet ports to the local area network (LAN) of the management host:

1. Locate the Ethernet port for Controller A and Controller B at the back of the

controller tray (FIGURE 3-1).

2. Connect Ethernet cables to the Ethernet ports of each controller.

3. Connect the other end of each Ethernet cable to the LAN on which your

management host resides (preferably on the same subnet).

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

Controller B

Controller A

Ethernet port

Chapter 3 Connecting the Management Host and Data Hosts 51

Attaching the Ethernet Ports to the Management

Host Using an Ethernet Hub

To attach the Ethernet ports and the management port Ethernet interface to an

Ethernet hub on a private subnet:

1. Locate Ethernet ports on Controller A and Controller B at the back of the

controller tray (FIGURE 3-1).

2. Connect Ethernet cables to the Ethernet ports of each controller module.

3. Connect the other end of each Ethernet cable to an Ethernet hub.

4. Connect an Ethernet port on the management host to the Ethernet hub.

Attaching the Ethernet Ports Directly to the

Management Host With a Cross-Over Cable

Note – This method would typically be used only to establish temporary IP

connectivity between the management host and the controller’s Ethernet ports.

To attach the Ethernet ports directly to the management host using cross-over cables:

1. Locate the Ethernet ports for Controller A and Controller B at the back of the

controller tray (FIGURE 3-1).

2. Obtain and connect Ethernet cross-over cables to the Ethernet port of each

controller module.

3. Connect the other end of each Ethernet cable directly to your management host

Ethernet ports.

Connecting Data Hosts to the 2540 Array

The Sun StorageTek 2540 Array connects to data hosts through Fibre Channel (FC)

cables.

52 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Note – For maximum hardware redundancy, you must install a minimum of two

HBAs in each host. Dual-port HBAs give you two paths into the storage array but do

not ensure redundancy if the HBA fails.

2540 Array Data Host Connection Topologies

You can connect data hosts to access the Sun StorageTek 2540 Array directly to the

array, or through Fibre Channel (FC) switches to the array. The following figures

illustrate four possible host connection topologies for the 2540 Array:

■Direct connection from a single data host server (FIGURE 3-2)

■Direct connection from two data host servers (FIGURE 3-3)

■Data host connection through Fiber Channel switch fabric (FIGURE 3-4)

■Mixed connection, direct and through switch (FIGURE 3-5)

Chapter 3 Connecting the Management Host and Data Hosts 53

FIGURE 3-2 Direct connection from a single data host server

FIGURE 3-3 Direct Connection from two data host servers

FIGURE 3-4 Data host connection through a Fibre Channel switch

1. Host

2. HBA 1

3. HBA 2

4. Host Port 1

5. Host Port 2

6. Controller A

7. Controller B

54 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE 3-5 Mixed topology of data hosts connected directly and through FC switches

2540 Array Data Host Connections

Data transmission from the host to the array controller modules is through fiber-

optic cables. The fiber-optic cables connect to the controllers through Small Form-

factor Pluggable (SFP) transceivers (FIGURE 3-6).

1. Host

2. HBA 1

3. HBA 2

4. Host Port 1

5. Host Port 2

6. Controller A

7. Controller B

1. Host 1

2. HBA 1

3. HBA 2

4. Host 2

5. Host 3

6. Host Port 1

7. Host Port 2

8. Controller A

9. Controller B

Chapter 3 Connecting the Management Host and Data Hosts 55

FIGURE 3-6 Connecting the SFP and Fiber-optic Cable to a 2540 Controller

The Sun StorageTek 2540 Array controller tray has fourFC host connector ports, two

per controller module. To maintain redundancy, connect two data paths from each

host, one to each controller.

FIGURE 3-7 FC host connectors on the 2540 controller.

▼To Connect Data Hosts Using Fibre Channel

1. Locate the host ports at the back of the controller tray (FIGURE 3-7).

If the host port has a plastic protection plug, remove it.

2. Plug one SFP transceiver into a host port.

1. Fibre Channel Host Port

2. SFP is Inserted

3. Fiber-optic Cable is

into the SFP

into the Host Port

inserted

1. not used

2. Fibre Channel data

port 1host

223. Fibre Channel data

host port 2

56 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

3. Plug one end of the fiber-optic cable into the SFP transceiver.

4. Plug the other end of the fiber-optic cable into one of the HBAs in the

host (direct topology) or into a switch (fabric topology).

5. Affix a label to each end of the cable. See “Host Cable Labeling” on

page 59 for labeling tips.

6. Repeat these steps for each host-to-controller connection.

Connecting Data Hosts to the 2530 Array

Data transmission from the host to the controllers in the array module is through

Serial Attached SCSI (SAS) cables. All connections from the host to the controllers

are direct connections (with no intermediate switches). FIGURE 3-8 shows an

example of a direct host connection from a single data host with dual HBAs.

FIGURE 3-8 Direct Connection From a Single Host With Dual HBAs

FIGURE 3-9 shows an example of direct host connections from two data hosts, each

with dual HBAs.

1. Host

2. HBA 1

3. HBA 2

4. Host Connectors on the

5. Controller A

6. Controller B

Controllers

Chapter 3 Connecting the Management Host and Data Hosts 57

FIGURE 3-9 Direct connections from two data hosts with dual HBAs.

FIGURE 3-10 shows an example of direct host connections from three data hosts, each

with dual HBAs.

FIGURE 3-10 Direct connections from three data hosts with dual HBAs.

Note – For maximum hardware redundancy, you must install a minimum of two

HBAs in each host. Dual-port HBAs give you two paths into the storage array but do

not ensure redundancy if the HBA fails.

58 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Before you connect data hosts directly to the array, check that the following

prerequisites have been met:

■Interface cables are connected and between the HBAs and the array controllers.

■SAS cables (1-, 3-, or 6-meters) are available to connect the array host ports to the

data host HBAs.

Each controller module on a controller tray has three SAS host ports (FIGURE 3-11).

FIGURE 3-11 SAS Data Host Ports (on back of tray).

▼To Connect Data Hosts to a 2530 Array

1. Locate the host ports at the back of the controller tray (FIGURE 3-11).

If the host port has a plastic protection plug, remove it.

2. Connect one end of the SAS cable to a host port on a controller module.

Host ports are numbered from left to right: host port 1, host port 2, and host

port 3.

3. Connect the other end of each SAS cable to a data host HBA.

4. Affix a label to each end of the cable. See “Host Cable Labeling” on page 59 for

information about cable labels.

5. Repeat these steps for each host-to-controller connection.

Controller B

Controller A

1. SAS Host Port 1

2. SAS Host Port 2

3. SAS Host Port 3

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

Link Link

HOST

LinkLink LinkLink

HOST

Link Link

DRIVE EXPANSION

3 3

Chapter 3 Connecting the Management Host and Data Hosts 59

Host Cable Labeling

Labels for host cabling identify which host HBA ports and which controller ports

you use when you attach cables between the host and the controller. Cable labels are

useful if you need to disconnect cables to service a controller. Attach a label to each

end of the cable. Use this design to create labels for host cables:

■Host name and HBA port

■Controller ID (for example, Controller A)

■Host channel ID (for example, Host channel 1)

Example Label Abbreviation

In this example, the storage configuration has the following characteristics:

■Host name is “Engineering”

■Host HBA 1, port 1

■Controller A, channel 1

Using this design, the label includes the following information:

Heng-HBA1/P1, CtA-Hch1

Next Steps

After you connected the management and data hosts, you can power on the trays, as

described in Chapter 4.

60 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

CHAPTER 4

Powering On the Array

This chapter describes initial tray power-on procedures. Perform the following

procedures in the order listed:

■“Before Powering On” on page 61

■“Powering On the Array” on page 62

■“Powering Off the Array” on page 63

■“Next Steps” on page 64

Before Powering On

You can set up a Dynamic Host Configuration Protocol (DHCP) server to issue the IP

address to each controller. If a DHCP server is not available, the controller tray

defaults to internal static IP addresses. (See the Sun StorageTek Common Array

Manager Software Installation Guide for information about configuring IP addresses on

array controllers.)

For instructions on configuring IP addresses on the array controllers, see

“Configuring the IP Address of the Array Controllers” on page 74. For instructions

on how to set up the DHCP server, see “Configuring a DHCP Server” on page 81.

62 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Powering On the Array

Use this procedure to turn power on for all trays installed in the cabinet (FIGURE 4-1).

Note – The order in which you power up the trays is important. Be sure to power

on the controller tray last in order to ensure that the disks in the expansion trays

have enough time to spin completely before being scanned by the redundant array

of independent disks (RAID) controllers in the controller tray.

FIGURE 4-1 Tray Power Connectors and Switches

1. Prepare the power cables as specified in “Connecting the Power Cables” on

page 42.

2. Turn on the cabinet circuit breakers, if applicable.

3. Press the power switches at the back of each expansion tray to the On position.

While the tray powers on, the green and amber LEDs on the front and back of the

controller tray turn on and off intermittently. Depending on your configuration, it

can take several minutes for the tray to power on. When the power-on sequence

is complete, the LEDs are steady green.

Wait until all the disk drive indicator lights on the expansion trays are steady

green before proceding to the next step.

4. Press each power switch at the back of the controller tray to the On position.

5. Check the status of each tray.

After the power-on sequence is complete, confirm the following:

■The green OK/Power LEDs on each drive in the tray are steady on.

Controller B

Controller A

1. Controller A power switch

2. Controller B power switch

Chapter 4 Powering On the Array 63

■The green OK/Power LED on the tray is steady on.

If all tray and drive Ok/Power LEDs are steady green and the amber Service

Required LEDs are off, the power-on sequence is complete and no faults have

been detected.

Powering Off the Array

The array rarely needs to be powered off. You remove power only when you plan to

physically move the array to another location or are adding additional trays to a

controller.

To power off the array, do the following:

1. Stop all I/O from the hosts, if connected, to the storage system.

2. Wait approximately 2 minutes until all disk drive LEDs have stopped flashing.

Note – If Disk Scrubbing is enabled, the disk drive LEDs will continue to flash after

the 2-minute period has elapsed. By waiting the 2-minute period, you ensure that

the data residing in cache has been written to disk. The LED flash rate during disk

scrubbing (slow, periodic blink) is different from the flash rate of I/O (fast, random).

After the 2-minute period, data residing in cache is written to disk and the

battery mechanisms are disengaged.

3. Check the Cache Active LED on the controller (FIGURE 1-10) to determine if any

outstanding cache needs to be written.

If the LED is on, there is still data that needs to be flushed and written to disk.

4. Ensure that the Cache Active LED is no longer flashing before powering off the

array.

5. Press each power switch at the back of the controller tray to the Off position.

6. Press the power switches at the back of each expansion tray to the Off position.

64 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Next Steps

After you have connected the management host and data hosts, you are ready to

install the management host software as described in the Sun StorageTek Common

Array Manager Software Installation Guide and the data host software as described in

Chapter 5.

CHAPTER 5

Data Hosts, HBAs, and Other

Software

This chapter describes how to install data host software, HBAs, and other software

on different host platforms. It contains the following sections:

■“Data Host Software” on page 65

■“Setting Up a Data Host On a Solaris System” on page 66

■“Installing Data Host Software for Operating Systems Other Than Solaris” on

page 69

■“Enabling Multipathing Software” on page 70

■“Next Steps” on page 71

Data Host Software

The data host software contains tools that manage the data path I/O connections

between the data host and the array. This includes drivers and utilities that enable

array management hosts to connect to, monitor, and transfer data in a storage area

network (SAN).

Note – Some management hosts can also be used as data hosts.

HBAs and Drivers

A Host Bus Adapter (HBA) is a network interface card that manages all data I/O on

your data host. The specific HBAs you need depend on the data host server

platform, operating system, data transport (SAS or FC), and data transfer rates used

66 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

in your storage area network. HBAs must be ordered separately, from Sun or their

respective manufacturers. Sun HBAs can be ordered from:

/www.sun.com/storagetek/storage_networking/hba/

The required versions of HBAdrivers must be installed on the data host before you

can set up a data host. The Sun StorageTek 2500 Series Array Release Notes lists the

data host requirements for HBAs and drivers. Refer to the specific vendor HBA

documentation for instructions on installing HBA drivers.

Multipathing

Data host software controls the data path between the data host and the array. Since

there can be more than one path between the host and the array for redundancy, this

function is called multipathing.

You must install data host software (including multipathing) on each data host that

communicates with the Sun StorageTek 2500 Series Array. The multipathing

software you need depends on the host platform, HBA, and the data transport (SAS

or FC) in your storage area network. This information is listed in the latest version of

the Sun StorageTek 2500 Series Array Release Notes.

Setting Up a Data Host On a Solaris

System

The Sun StorageTek 2500 Series Array provides data path support for data hosts

running Solaris, Windows 2000, Windows Server 2003, Red Hat Linux, HP-UX,

NetWare, and IBM AIX operating systems. This section applies to hosts running

Solaris OS 8, 9, and 10.

See the Sun StorageTek 2500 Series Array Release Notes for the latest supported

operating system versions.

Note – To install data host software on systems that are not running the Solaris OS, see

“Installing Data Host Software for Operating Systems Other Than Solaris” on

page 69.

You must install data host software (including multipathing) on each data host that

communicates with the Sun StorageTek 2500 Series Array. Multipathing is included

in the Solaris 10 OS. For Solaris OS 8 and 9 data hosts, you need the SAN

Foundation Kit software (which includes the multipathing software).

Chapter 5 Data Hosts, HBAs, and Other Software 67

To install data host software on Solaris OSs, see the following sections:

■“To Obtain Sun Solaris 8 and 9 Data Host Software” on page 67

■“To Install the SAN 4.4 Data Host Software” on page 67

▼To Obtain Sun Solaris 8 and 9 Data Host

Software

Obtain Sun Solaris OS 8 and 9 data host software as follows:

1. Go to the Sun Microsystems web page (sun.com).

The Sun home page is displayed.

2. Select Downloads from the home page navigation bar.

The Downloads page is displayed (it is not labeled).

3. On the View by Category tab, select System Administration>Storage

Management.

The Storage Management page is displayed, showing a list of downloadable

storage-related products.

4. Select the SAN 4.4 product.

The login page is displayed.

5. Login using your Sun account ID.

The SAN 4.4.x Download page is displayed.

6. Accept the License Agreement and select the SAN 4.4 version required for your

operating system.

The data host software version you need depends on your operating system. See

the Sun StorageTek 2500 Series Array Release Notes for the current data host

software requirements. Download the Solaris x(8 or 9) Base Package (if you do

not already have it installed), and then the Install_it Script SAN 4.4.x version as

recommended in the release notes.

There is a README file available on the SAN 4.4.x Download page with

instructions for unpacking and installing the download file on your data host

computer.

▼To Install the SAN 4.4 Data Host Software

To launch the host software installer:

68 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

1. Log in to the host as root.

2. Change to the SAN_4.4.xx_install_it directory in which the compressed

installation file was unpacked:

cd <user-specified location>/SAN_4.4.xx_install_it

3. where xx is the software version number of the installed files.Start the host

software installer by typing the following command:

./install_it

When the installation is complete, the root prompt returns.

4. Enable the Sun StorageTek Traffic Manager multipathing software (see

“Enabling Multipathing Software” on page 70).

▼To Obtain Traffic Manager for Operating

Systems Other Than Solaris

1. Go to the Sun Microsystems web page (sun.com).

The Sun home page is displayed.

2. Select Downloads from the home page navigation bar.

The Downloads page is displayed (it is not labeled).

3. On the View by Category tab, select System Administration>Storage

Management.

The Storage Management page is displayed, showing a list of downloadable

storage-related products.

4. Scroll down and select the Traffic Manager version for the operating system

you have.

The login page is displayed.

5. Login using your Sun account ID.

The Traffic Manager product Download page is displayed.

6. Accept the License Agreement and select the Traffic Manager version required

for your operating system.

The data host software version you need depends on your operating system. See

the Sun StorageTek 2500 Series Array Release Notes for the current data host

software requirements.

There is a README file available on the download page with instructions for

unpacking and installing the download file on your data host computer.

Chapter 5 Data Hosts, HBAs, and Other Software 69

Installing Data Host Software for

Operating Systems Other Than Solaris

To install data host software for operating systems other than Solaris, see the

following sections:

■“About Data Host Software For Non-Solaris Platforms” on page 69

■“Downloading and Installing Sun RDAC Software” on page 69

Note – To dowload software from the Sun Download Center, you must register as a

Sun customer. The first time you click Download to download a software product,

click the Register Now link on the Login page, complete the required fields, and

click Register.

About Data Host Software For Non-Solaris

Platforms

The data host software for Red Hat Linux, HP-UX, AIX, and Windows platforms is

Sun Redundant Dual Array Controller (RDAC), also known as MPP, and is available

from the Sun Download Center (SDLC).

See the Sun StorageTek 2500 Series Array Release Notes for a list of supported operating

systems, patches, and HBAs.

Downloading and Installing Sun RDAC Software

1. To download the latest version of Sun RDAC software (support for Windows

and Linux multipathing), go to:

http://www.sun.com/download/index.jsp

and select Hardware Drivers>Storage.

2. Select the link for the RDAC driver for the Operating System you have.

An RDAC Driver download page is displayed.

3. Click Download.

4. Log in using your SDLC user name and password.

5. Read and accept the license agreement.

70 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

6. Select the link for the data host platform that you want to install.

7. Save the install package to a temporary directory.

8. Uncompress and untar the install package.

9. When the download is finished, log out of the SDLC.

Areadme file is provided as part of the installation package. To install the software,

refer to the readme file for platform-specific instructions.

Enabling Multipathing Software

Sun StorageTek SAN Foundation software includes the Sun StorageTek Traffic

Manager multipathing software.

The procedure you use to enable multipathing software depends on the version of

Solaris OS running on the host:

■“Enabling Multipathing Software for Solaris 8 or 9 OS” on page 70

■“Enabling Multipathing Software for Solaris 10 OS” on page 71

▼Enabling Multipathing Software for Solaris 8 or

9OS

To enable the multipathing software on hosts running Solaris OS 8 or 9:

1. Open the /kernel/drv/scsi_vhci.conf file with a text editor.

2. Set mpxio-disable=”no”; in the file.

3. Set load-balance=”round-robin”; in the file.

4. Set auto-failback=”enable”; in the file.

5. Save the updated file.

6. Reboot the host.

Chapter 5 Data Hosts, HBAs, and Other Software 71

7. Use the cfgadm command to configure HBA paths.

How you configure paths depends on how you are using your arrays in a SAN or

direct attach environment. See the Sun StorageEdge SAN Foundation Software 4.4

Configuration Guide (www.sun.com/products-n-solutions/hardware

/docs/Network_Storage_Solutions/SAN/san_software/) for information

about configuring paths.

▼Enabling Multipathing Software for Solaris 10

To enable multipathing software for all Fibre Channel (FC) ports on hosts running

Solaris OS 10:

1. Type the following command:

# stmsboot -e

Note – See the stmsboot(1M) man page for complete details.

You are prompted to confirm the command:

WARNING: This operation will require a reboot.

Do you want to continue ? [y/n] (default: y)

2. Press Return to reboot the host.

Next Steps

After you have installed and enabled multipathing on the data hosts, configure IP

addressing on the array controllers as described in Chapter 6.

72 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

CHAPTER 6

Configuring IP Addressing

In order for there to be an out-of-band Ethernet connection between the local

management host and the array controllers, the management host and the array

controllers must have valid IP addresses.

This chapter describes how to configure IP addressing on the local management host

and the array controllers. It contains the following sections:

■“About IP Addressing” on page 73

■“Configuring the IP Address of the Array Controllers” on page 74

About IP Addressing

The Sun StorageTek 2500 Series Array is managed out-of-band by way of a standard

Ethernet connection between the redundant array of independent disk (RAID)

controllers and your management host.

Perform the following procedures to ensure that the local management host and the

array controllers have valid IP addresses:

■Configure IP addresses for the array controllers (see “Configuring the IP Address

of the Array Controllers” on page 74)

■Configure an IP address for the management host (see the Sun StorageTek Common

Array Manager Software Installation Guide)

74 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Configuring the IP Address of the Array

Controllers

You can configure two types of IP addressing for the Ethernet port of each array

controller:

■Dynamic Host Configuration Protocol (DHCP) IP addressing – IP addresses for

the Ethernet port are assigned dynamically from a DHCP server running

bootstrap protocol (BOOTP) services. An IP address assigned to an Ethernet port

is held only as long as needed. By default, DHCP is not enabled at initial power-

on, so you must connect to it using a serial console or the Common Array

Manager and the controller’s static IP address, and then enable DHCP.

■Static IP Addressing – You assign a specific IP address to the Ethernet port of each

controller. Static IP addresses remain in effect until you modify or remove them or

you change the method of IP addressing for the Ethernet port to DHCP.

By default, if the array controllers cannot find a DHCP server upon initial power-

on, an internal IP address is assigned to Ethernet port 1 of each controller:

■The Ethernet port of Controller A is assigned IP address 192.168.128.101

■The Ethernet port of Controller B is assigned IP address 192.168.128.102

■The default subnet mask for each port is 255.255.255.0

To configure the Ethernet port on a controller with either dynamic or static IP

addressing, see one of the following sections:

■“Configuring Dynamic (DHCP) IP Addressing” on page 74

■“Configuring Static IP Addressing” on page 75

Configuring Dynamic (DHCP) IP Addressing

If BOOTP services are available on the DHCP server at initial array power on, this

server assigns a dynamic IP address for the Ethernet port on each controller.

If a DHCP server is not available, the controller tray defaults to internal static IP

addresses as described in “Configuring the IP Address of the Array Controllers” on

page 74.

If you want to set up a DHCP server, refer to Appendix A for a description of how to

configure BOOTP services in Sun Solaris or Microsoft Windows environments.

You can restore DHCP IP addressing to Ethernet port 1 of either controller in either

of three ways:

■Start a DHCP server on the same subnet, then reboot the 2500 Series Array.

Chapter 6 Configuring IP Addressing 75

■Using the serial port interface (see “Using the Serial Port Interface to Assign IP

Addresses” on page 75)

■Using the Sun StorageTek Common Array Manager (see the Sun StorageTek

Common Array Manager Software Installation Guide)

Configuring Static IP Addressing

There are two methods of assigning static IP addresses to the Ethernet ports of a

controller:

■The serial port interface (see “Using the Serial Port Interface to Assign IP

Addresses” on page 75)

■The Common Array Manager (see the Sun StorageTek Common Array Manager

Software Installation Guide)

Note – It is recommended that you use the serial port interface to assign IP

addresses to the Ethernet port of each controller, if possible.

Using the Serial Port Interface to Assign IP Addresses

You can use the serial port interface on a controller to set the IP address for the

Ethernet port on the controller.

To use the serial port interface to configure IP addressing for the Ethernet port of

each controller, you must complete the tasks described in the following sections:

■“To Connect a Terminal to the Serial Port” on page 75

■“To Set Up the Terminal Emulation Program” on page 76

■“To Establish a Connection With the Serial Port” on page 77

■“To Configure the IP Addresses” on page 78

▼To Connect a Terminal to the Serial Port

You will establish a serial connection to each controller, Controller A and Controller

B. Two mini-DIN to RJ45 serial port cables are supplied with each controller tray.

76 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

To connect a terminal to the serial port of a controller:

1. Connect the 6-pin mini-DIN connector of the serial cable to the serial port

connector (diagnostic port) on the controller (FIGURE 1-3 on page 6).

2. Connect the RJ-45 connector of the serial cable to the serial port connector on

the terminal. It may be necessary to use an RJ45-DB9 adapter between the

serial cable RJ-45 connector and the serial port of the terminal.

3. For PC and laptop serial connections, you will also need to use a null modem.

Connect the null modem between the serial cable or RJ45-DB9 adapter and the

PC serial port.

Note – If your PC does not have a serial port, you can use a USB–Serial Port adapter

(separately available from third-party vendors; not included with 2500 Series Array

ship kits).

Serial Cable Pinouts

TABLE 6-1 shows the pinouts for the RJ45-DIN serial cable (Sun part number 530-

3544) included with the 2500 Series Array shipkit.

▼To Set Up the Terminal Emulation Program

To set up a terminal emulation program to connect to the serial port:

1. Select VT100 emulation.

2. Remove any modem strings from the connection profile.

3. Set up the connection profile with the following communication settings:

TABLE 6-1 RJ45 to DIN Serial Cable Pinouts

RJ45 ----------> PS2-miniDin

1Tx 6Rx

3Rx 1Rx

4,5,7 3, 5 GRD

6Rx 2Tx

Chapter 6 Configuring IP Addressing 77

■Data Rate: 38400

■Data Bits: 8

■Parity: None

■Stop Bits: 1

■Flow Control: None

▼To Establish a Connection With the Serial Port

To establish a connection with the serial port and display the Service Interface menu:

1. Press Break.

Note – The array serial port requires that the break character be received. Use the

appropriate escape sequence for your terminal setup to send the required break

character to the array controller, For example, you generate the Break character on

some terminals by pressing the Control and Break keys simultaneously.

The serial port responds with a request to synchronize with the baud rate of the

terminal:

Set baud rate: press <space> within 5 seconds

2. Press the space bar within five seconds.

The serial port confirms the established baud rate for the connection:

Baud rate set to 38400

3. Press Break (see Note above)

The serial port responds with the following message:

Press within 5 seconds: <S> for Service Interface, <BREAK>

for baud rate

4. Press S to access the Service Interface menu.

Note – Send Break to synchronize the serial port to a different terminal port rate

(see Note above).

The serial port requests the serial port password:

Enter Password to access Service Interface (60 sec timeout):

5. Type the serial port password, kra16wen, and press Enter.

The Service Interface menu is displayed.

78 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

▼To Configure the IP Addresses

The serial port Service Interface menu enables you to set up the IP address

configuration for the Ethernet port on the controller.

To set up the IP address configuration for the Ethernet port on each controller:

1. Select option 2, Change IP Configuration:

2. Specify that you do not want dynamic IP addressing, using a DHCP server,

used for this port:

The current or default IP configuration for the selected Ethernet port is displayed.

3. Enter the static IP address and, optionally, a subnet mask for the Ethernet port:

Note – If you are not using DHCP IP addressing and have a gateway IP address on

your subnet, you must also specify a gateway IP address for the Ethernet port. This

option displays only if the serial interface detects a gateway.

Service Interface Main Menu

==============================

1) Display IP Configuration

2) Change IP Configuration

3) Reset Storage Array (SYMbol) Password

Q) Quit Menu

Enter Selection:

Service Interface Main Menu

==============================

1) Display IP Configuration

2) Change IP Configuration

3) Reset Storage Array (SYMbol) Password

Q) Quit Menu

Enter Selection: 2

Configure using DHCP ? (Y/N): n

Chapter 6 Configuring IP Addressing 79

4. When prompted, confirm the specified IP addressing.

The Service Interface menu is redisplayed.

5. Select option 1, Display IP Configuration, to confirm the IP address changes.

The IP address configuration of the Ethernet port is displayed, and the Service

Interface menu is redisplayed.

6. Press Q to quit the Service Interface menu.

7. Switch the serial cable to the Ethernet port on the other controller and repeat

these steps to set the IP address on that controller as well.

8. Power cycle the controllers off and on again to reset them with the new IP

address.

When you have completed the IP address configuration for the Ethernet port on

both array controllers and power cycled them, see the Sun StorageTek Common Array

Manager Software Installation Guide for instructions on registering and configuring the

array.

Press '.' to clear the field;

Press '-' to return to the previous field;

Press <ENTER> and then ^D to quit (Keep Changes)

Current Configuration New Configuration

IP Address if1 : 192.168.128.101 IP-address

Subnet Mask if1 : 255.255.255.0 <ENTER>

Gateway IP Address if1: <ENTER>

Service Interface Main Menu

==============================

1) Display IP Configuration

2) Change IP Configuration

3) Reset Storage Array (SYMbol) Password

Q) Quit Menu

Enter Selection: 1

80 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

CHAPTER A

Configuring a DHCP Server

This appendix describes how to configure bootstrap protocol (BOOTP) services in a

Sun Solaris and Microsoft Windows environment. It contains the following sections:

■“Before You Begin” on page 81

■“Setting Up a Solaris DHCP Server” on page 81

■“Setting Up a Windows 2000 Advanced Server” on page 86

Dynamic IP addresses are assigned through dynamic host control protocol (DHCP)

server BOOTP services.

Before You Begin

You need each controller’s media access control (MAC) address to configure the

DHCP server. The MAC address is located on the bar code label at the back of each

redundant array of independent disks (RAID) controller. Since there are two

controllers per array, you need two MAC addresses.

Setting Up a Solaris DHCP Server

The following procedure provides an example of how to set up a DHCP server with

the BOOTP option for the Solaris 8, 9, and 10 Operating Systems. Your environment

may require different steps.

1. Modify the netmasks line of the /etc/nsswitch.conf file as shown here:

#netmasks: nis [NOTFOUND=return] files

netmasks: files nis [NOTFOUND=return]

82 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

2. Start the DHCP wizard by issuing the following command at the command

line:

/usr/sadm/admin/bin/dhcpmgr &

The following window is displayed:

The wizard will prompt you for information related to the configuration, network

address, and subnet mask of the controller tray. Select or enter the following

information:

■Data storage format: Text files

■Nameservice to store host records: Do not manage hosts records

■Length of lease:

■Network Address: Network address of Controller A

■Subnet Mask: For example, 255.255.255.0

■Network Type: Local-Area (LAN)

■Router: Use router discovery protocol

Your summary page should look similar to the following example:

Chapter A Configuring a DHCP Server 83

3. Verify your configuration information and click Finish.

4. When you are prompted to configure addresses for the server, click Yes.

The Add Address to Network wizard is displayed.

5. Enter the following information:

■Number of IP addresses

■Name of managing server

■Starting IP address

■Configuration macro to be used for configuring the clients

■Lease type

Your summary page should look similar to the following example:

84 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

6. Verify your configuration information and click Finish.

The DHCP Manager displays the following:

7. In the Address Properties window, do the following:

a. In each Client ID field, enter 01 followed by the MAC address that is

printed on the back of the RAID controller. For example:

0100A0E80F924C

b. Toward the bottom of the window, select “Assign only to BOOTP clients.”

Chapter A Configuring a DHCP Server 85

c. Click OK.

The DHCP manager updates the status and client ID, as shown in the

following example:

8. Go to Modify Service Options and do the following:

a. Select Detect Duplicate IP addresses.

b. Under BOOTP Compatibility, select Automatic.

c. Select Restart Server, as shown in the following example.

86 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

d. Click OK.

After the configuration process has finished, the DHCP server provides BOOTP

services to the MAC address you entered for each RAID controller.

9. To verify that the BOOTP service is running, go to Service > Restart.

10. After you power on the array, ping the address.

If the ping responds with ‘alive’, the DHCP server BOOTP operation was

successful.

Setting Up a Windows 2000 Advanced

Server

Before you begin, make sure the following requirements are met:

■Windows 2000 server and the array are on the same subnet.

■IP addresses that are assigned to the RAID controllers do not conflict.

■The array is in BOOTP IP addressing mode (the default setting for a new array).

■The Windows 2000 Server setup CD is available.

Chapter A Configuring a DHCP Server 87

The following procedure provides an example of how to set up DHCP with the

BOOTP option on the Windows 2000 Advanced Server. Your environment may

require different steps.

Installing the DHCP Server

To install DHCP server on the Windows 2000 Advanced Server:

1. From the Control Panel, go to Administrative Tools > Configure Your Server.

2. Select DHCP from the Networking drop-down menu on the left.

The wizard instructs you to use the Windows Components wizard to add the

DHCP component.

3. Start the Windows Components wizard and double-click Networking Services.

4. Select Dynamic Host Configuration Protocol (DHCP), click the check box to its

left, and click OK.

The Windows Components wizard is displayed.

5. Click Next.

6. If Terminal Services Setup is displayed, select Remote administration mode.

Click Next.

If your server has obtained an address from a DHCP server for its own address,

a warning is displayed.

7. Click OK to accept the warning.

Local Area Connection Properties is displayed.

8. Assign a static IP address to the server, or click Server to keep DHCP

addressing for the server. Click OK.

9. Click Finish to exit the Windows Components wizard.

The DHCP server is now installed. The next step is to configure the server.

Configuring the DHCP Server

To configure the DHCP server:

1. From the Control Panel, go to Administrative Tools > Computer Management >

Services and Application > DHCP.

88 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

2. From the Action menu, select New Scope.

The New Scope wizard is displayed.

3. Enter the following information as prompted:

■Scope name and description:

■IP address range (for example, 192.168.0.170 to 192.168.0.171)

■Subnet mask (for example, 255.255.255.0)

■Add exclusions (do not exclude any IP addresses)

■Lease duration (accept the default of 8 days)

■Router (default gateway) of your subnet (for example, 192.168.0.1)

■Domain name, WINS server (these are not needed)

■Activate Scope? (select “Yes, I want to activate this scope now”)

4. Click Finish to exit the wizard.

The contents of the DHCP server are listed.

5. Right-click Scope [ipaddress]scope-name and select Properties.

6. In the Scope Properties box, click the Advanced tab.

7. Select BOOTP only, set the lease duration to Unlimited, and click OK.

8. Right-click Reservations.

The Controller A Properties box is displayed.

9. Enter the IP address and the MAC address for Controller A. Click Add.

The Controller B Properties box is displayed.

10. Enter the IP address and the MAC address for Controller B. Click Add.

The controllers are added to the right of the Reservations listing.

11. Right-click Scope [ipaddress]scope-name to disable the scope.

12. Click Yes to confirm disabling of the scope.

13. Right-click Scope and select Activate.

The DHCP server is now configured with the BOOTP option for the array

network.

14. Power on or power cycle the array modules.

15. Click Address Leases in the left pane to check the DHCP server leases.

The lease expiration displays the following status for each RAID controller:

Reservation (active)

Chapter A Configuring a DHCP Server 89

If the lease expiration for the controllers is inactive, try refreshing the list. If the

lease is still inactive, check the following:

■Are the IP addresses allocated for BOOTP conflicting?

■Were the correct MAC addresses added to the DHCP server for the array

controllers?

■Are the DHCP server and array on the same subnet?

■Is the gateway configured correctly on the DHCP server?

The RAID controllers can gain a lease and an IP address, but they cannot respond

out of the subnet for the software if the gateway is not configured properly.

■Are the RAID controllers set up for BOOTP access?

It is possible that they were previously configured to have static IP addresses. You

must be sure when you move an array that you change the array’s IP addresses to

IP addresses on the new subnet before setting up BOOTP services.

90 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

CHAPTER B

Using DC Power

This appendix describes using the DC Power Unit for the Sun StorageTek 2500 Series

Arrays in the following sections:

■“DC Power Overview” on page 91

■“Installation Notes for DC Power” on page 92

■“Ship Kit Changes” on page 93

■“DC Power LEDS” on page 93

■“Connecting Power Cables” on page 94

■“Turning Off the DC Power During an Emergency” on page 96

■“Relocation Cautions” on page 96

DC Power Overview

The Sun StorageTek 2500 Series Arrays can be ordered with a DC power connection

and connector cables.

Caution – A qualified service person is required to make the DC power connection

per NEC and CEC guidelines. A two-pole 20-amp circuit breaker is required

between the DC power source and the array module for over-current and short-

circuit protection. Before turning off any power switches on a DC-powered module,

you must disconnect the two-pole 20-amp circuit breaker.

Caution – Electrical grounding hazard – This equipment is designed to permit the

connection of the D.C. supply circuit to the earthing conductor at the equipment.

92 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

FIGURE B-1 shows the locations of the power-fan assemblies.

FIGURE B-1 Power Fan Assembly Locations.

Caution – Risk of electrical shock – This unit has more than one power source.

To remove all power from the unit, all DC MAINS must be disconnected by

removing all power connectors (item 4 in Appendix FIGURE B-2) from the power

supplies.

FIGURE B-2 DC Power Connector Cable and Source Wires

Installation Notes for DC Power

The sections that follow provide hardware information about DC power.

Chapter B Using DC Power 93

■“Ship Kit Changes” on page 93

■“DC Power LEDS” on page 93

■“Connecting Power Cables” on page 94

■“Turning Off the DC Power During an Emergency” on page 96

■“Relocation Cautions” on page 96

Ship Kit Changes

If the DC power option is ordered, two DC power connector cables are provided

with each controller tray for connection to centralized DC power plant equipment.

Caution – A qualified service person is required to make the DC power connection

per NEC and CEC guidelines. A two-pole 20-amp circuit breaker is required

between the DC power source and the array module for over-current and short-

circuit protection. Before turning off any power switches on a DC-powered module,

you must disconnect the two-pole 20-amp circuit breaker.

DC Power LEDS

FIGURE B-3 shows the LEDs, on/off power switch, and power cable receptacle on the

back of the DC power module.

FIGURE B-3 DC Power Module LEDs, Power Switch, and Power Cable Receptacle.

94 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

TABLE B-1 lists the LEDs for DC power.

TABLE B-1 DC Power Module LEDs.

Connecting Power Cables

Caution – A qualified service person is required to make the DC power

connection per NEC and CEC guidelines. A two-pole 20-amp circuit breaker is

required between the DC power source and the array module for over-current and

short-circuit protection. Before turning off any power switches on a DC-powered

module, you must disconnect the two-pole 20-amp circuit breaker.

LED Color On Off

DC Power (DC Good) Green DC power from the

power-fan assembly is

available.

DC power from the power-

fan assembly is not

available.

Service Action Allowed Blue The power-fan assembly

can be removed from the

tray.

The power-fan assembly

cannot be removed from the

tray.

Service Action Required

(Fault)

Amber A fault exists within the

power-fan assembly.

Normal condition

Power (DC Good) Green Power is present Power is not present

Chapter B Using DC Power 95

Caution – Ensure that you do not turn on power to the array module or the

connected drive modules until this guide instructs you to do so. For the proper

procedure for turning on the power, see ““Connecting Power Cables” on page 94.”

Caution – Electrical grounding hazard – This equipment is designed to permit the

connection of the D.C. supply circuit to the earthing conductor at the equipment.

▼Connecting the Cables

1. Disconnect the two-pole 20-amp DC circuit breaker for the storage array.

2. Ensure that all DC power switches on the DC-powered array module and all

DC power switches on any connected, DC-powered drive modules are turned

off.

3. Connect the DC power connector cable to the DC power connector on the back

of the array module.

Caution – The three source wires on the DC power connector cable (–48 VDC)

connect the array module to centralized DC power plant equipment, typically

through a bus bar located above the cabinet.

4. A qualified service person is required to make the DC power connection per

NEC and CEC guidelines. A two-pole 20-amp circuit breaker is required

between the DC power source and DC-powered modules for over-current and

short-circuit protection. Connect the DC power source wires on the other end

of the DC power connector cable to the centralized DC power plant equipment

as follows (see “DC Power Connector Cable and Source Wires” on page 92).

a. Connect the brown –48-VDC supply wire to the negative terminal.

b. Connect the blue return wire to the positive terminal.

c. Connect the green/yellow ground wire to the ground terminal.

5. If applicable, connect a DC power cable to each DC-powered expansion tray in

the storage array.

96 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

Turning Off the DC Power During an Emergency

Caution – Potential loss of data – An emergency shutdown of the storage array

might not allow the server to complete its I/O to the storage array.

Note – Before turning off the power switches on a DC-powered tray you must

disconnect the two-pole 20-amp circuit breaker.

Relocation Cautions

Use the following guidelines when relocating trays or drives from one storage array

to another.

Caution – Potential data loss – Moving a array or array components that are

configured as part of a volume group can result in data loss. To prevent data loss,

always consult a Customer Support representative before relocating configured

drives, controller trays or expansion trays.

Note – Trays in arrays can be connected to the DC power supply (–48 VDC). Before

turning off any power switches on a DC-powered tray, you must disconnect the two-

pole 20-amp circuit breaker.

Do not move controller trays or expansion trays that are part of a volume group

configuration. If you must move array components, contact a Customer Support

representative for procedures. A Customer Support representative might direct you

to complete several tasks prior to undertaking the relocation. These tasks might

include:

■Creating, saving, and printing an array profile of each storage array that is

affected by the relocation of a drive or tray.

■Performing a complete backup of all data on the drives that you intend to move.

■Verifying that the volume group and each of its associated volumes on the

affected array have an Optimal status.

■Determining the location and status of any global hot spares associated with the

affected storage array.

Glossary

Definitions obtained from the Storage Networking Industry Association (SNIA)

Dictionary are indicated with “(SNIA)” at the end. For the complete SNIA

Dictionary, go to www.snia.org/education/dictionary.

agent

The component of the system monitoring and diagnostic software that collects

health and asset information about the array.

alarm

A type of event that requires service action. See also event.

alert

A subtype of an event that requires user intervention. The term actionable event often

describes an alert. See also event.

array

Multiple disk drives that function as a single storage device. A high-availability

(HA) array configuration has redundant controllers and expansion trays of disk

drives.

array hot-spare

A disk that serves as a hot-spare within an array as part of the storage pool; a

reserve disk that can be made available to all virtual disks within an array. See also

hot-spare.

98 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

block

The amount of data sent or received by the host per I/O operation; the size of a data

unit.

capacity

The amount of storage you must allocate to storage elements, including volumes,

pools, and virtual disks. Capacity planning should include allocations for volume

snapshots and volume copies.

CLI

Command-line interface. The SSCS command-line interface is available from the

remote CLI client or through an SSCS directory on the Solaris Operating System

management software station.

controller tray

A tray with an installed redundant RAID controller pair. In a Sun StorageTek 2500

Series array, 1x1, 1x2, 1x3, and 1x4 array types are available.

control path

The route used for communication of system management information, usually an

out-of-band connection.

customer LAN

See site LAN.

DAS

See direct attached storage (DAS).

data host

Any host that uses the system for storage. A data host can be connected directly to

the array (direct attach storage, or DAS) or can be connected to an external switch

that supports multiple data hosts (storage area network, or SAN). See also host.

Glossary 99

data path

The route taken by a data packet between a data host and the storage device.

direct attached storage (DAS)

A storage architecture in which one or two hosts that access data are connected

physically to a storage array.

disk

A physical drive component that stores data.

event

A notification of something that happened on a device. There are many types of

events, and each type describes a separate occurrence. See also alarm and alert.

expansion tray

A tray that does not have a RAID controller, used to expand the capacity of an array.

This type of tray must be attached to a controller tray to function.

extent

A set of contiguous blocks with consecutive logical addresses on a physical or

virtual disk.

failover and recovery

The process of changing the data path automatically to an alternate path.

fault coverage

The percentage of faults detected against all possible faults or against all faults of a

given type.

See FibreChannel (FC).

Fibre Channel (FC)

A set of standards for a serial I/O bus capable of transferring data between two

ports at up to 100 megabytes/second, with standards proposals to go to higher

speeds. Fibre Channel supports point to point, arbitrated loop, and switched

100 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007

topologies. Fibre Channel was completely developed through industry cooperation,

unlike SCSI, which was developed by a vendor and submitted for standardization

after the fact.

Fibre Channel switch

A networking device that can send packets directly to a port associated with a given

network address in a Fibre Channel storage area network (SAN). Fibre Channel

switches are used to expand the number of servers that can connect to a particular

storage port. Each switch is managed by its own management software.

field-replaceable unit (FRU)

An assembly component that is designed to be replaced on site, without the system

having to be returned to the manufacturer for repair.

FRU

See field-replaceable unit (FRU).

HBA

See host bus adapter (HBA).

host

As a function of the Sun StorageTek 2500 Series array configuration, a representation

of a data host that is mapped to initiators and volumes to create a storage domain.

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