Infortrend Technology 3101U2G User Manual 32019

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IFT-3101UZG
UnraZ-to-Ultralscsl RAID Controller
Instruction Manual
Revision 1.1
FCC ID:LCB3101U2G
Infortrcaflg
<:
Federal Communications Commission (FCC) Statement
This equip-ent has been tested and found'to colply with
the limits for a Class B digital device. pursuant’to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against haraful interference in a
residential installation. This equiplent generates. uses
and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions.
may cause harlful interference to radio conluaications.
However. there is no guarantee that interference will nut
occur in a particular installation..If this equipment
does cause harmful interference to radio or television
reception. which can be determined by turning the
equipment off and on. the user is encouraged to try t0«
correct the interference by one or more of the following
measures:
__ Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and
receiver.
-— Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
—- Consult the dealer or an experienced radio/TV
technician for help.
llarning= A shielded-type power cord is required in order
to neet FCC emission limits and also to prevent
interference to the nearby radio and television reception.
It is essential that only the supplied power cord be used.
Use only shielded cables to connect 1/0 devices to this
equipment.
You are cautioned that changes or lodifications not
expressly approved by the party responsible for
coapIiance could void your authority to operate the
equipment.
Chapter 1 Introduction
The IFT-3101U2G is an UItraZ-to-UltraZ SCSI RAID controller
specifically designed to provide RAID 0, l(0+1), 3, 5 or JBOD
capability to any host system equipped with a SCSI interface, It is
totally independent of the host system's operating system. All RAID
functions are performed by an AMD 5x86 CPU coupled with high-
speed DRAMs and firmware in flash memory. In effect, it endows the
host system with a highASpeed and fault-tolerant disk storage
operation using the RAID technology. It is an ideal solution for
weaving several hard disks into one contiguous volume.
The controller has comprehensive drive failure management that
allows automatic reassignment of reserved blocks when a bad sector
is encountered during a write. Hot-swapping is supported through
automatic disconnection of a failed drive and detection of a reserved
drive followed with background rebuilding of data, The controller
also supports spare drive operation. What’s remarkable is all these
failure recovery procedures are transparent to the host system,
The controller has been designed with ease of integration and
maintenance in mind, All major features are described in the next
chapter. The IFT-3101UZG already includes all the major operational
requirements of a RAID subsystem. The overall features of a fully-
built RAID subsystem will, however, depend on the actual
components used and the creativity of the integrator.
——_
lFT—3101UZG Instruction Manual l-l
Chapter 2 Features
Five operating modes:
‘\
xxxx
JBOD Just a Bunch of Drives
Non-RAID Disk Spanning
RAID—0 Disk Striping
RAID-1 Disk Mirroring and Striping (RAID 0+1)
RAID-3 Disk Striping with Dedicated Parity
RAIDS Multiple Block Striping with Interspersed
Parity
Comprehensive failure management including:
. Automatic bad sector reassignment
. Hot—swapping
' Spare drive operation (Supports both Global Spare and Local
Spare)
. Background rebuilding (Rebuild priority selectable)
. Verify-after-Write supported on normal writes, rebuild writes
and / or RAID initialization writes
Works with any operating system without additional software
drivers.
3.5" drive profile allows easy integration into external subsystem
enclosures or directly into the host system's drive bay.
Up to three drive channels (optional 2-channel upgrade) for a beta]
of 45 connected drives.
Supports up to 15 SCSI IDs per channel.
Three optional upgrade daughterboards:
- IFF-90U: 3 Ultra Wide, single—ended, SCSI channels
— II-T-QDU: 2 Ultra Wide, differential, SCSI channels
— 1FT-90U: 3 Ultraz Wide SCSI channels
Up to 8 logical drives, each with independent RAID modes; up to
32 LUN’s per SCSI ID (multiple SCSI [US per channel are
supported)
Up to 8 partitions per logical drive
Logical drive can be assigned a name for ease of identification
Number of drives for each logical drive has no limitation
Dynamic mapping of LUNs to logical drives Two or more LUNs
can be mapped to the same logical drive for redundant host
operation,
IFT-3101UZG Instruction Manual 2-1
Concurrent/ Background logical drive initialization.
’\
Performance optimization for Sequential or Random I/O.
-/ Allows multiple drive failure and concurrent multiple drive
rebuild of a RAID (0+1) logical drive.
Configuration of individual SCSI target parameters.
\\
Controller can be assigned a name for ease of identification.
./ Prior to first disk access, it allows adjustment of delay time during
controller initialization to enhance compatibility with slow-initial
drives
1 All channels are UltraZ-Wide SCSI-2 (backward compatible to
SCSI-1) and can be configured as either a host or drive interface
/ Two or more SSI channels can be simultaneously set as host
interface for redundant host system operation
\/ Compatible and will automatically match any SCSI hard disks
with SCSI-l, scsr-z or (Ultra)-Wide-SCSI (1 or 2) specification.
/ Full UltraZ-WideKSI-Z implementation including Tagged
Command Queuing and MultiJI'hreaded I/O
Uses AMD 5x86 CPU with all executable firmware downloaded
into high-speed DRAM
EDD DRAM supported for enhanced performance.
Up to 128 Mbytes of intelligent Read—Ahead/ Write-Back cache
Firmware resides in easy—to—update flash memory
Front panel LCD and push buttons for configuration and message
display
Supports TEINET with I’PP protocol for remote administration
GUI RAID Manager and R's—232 terminal interface for RAID
management
/ SAF—TE support
/ Supports Fault-bus for enclosure management.
‘\\\’\ \
\\
___———
2-2 Infortrend
Chapter 3 Configuration Options
The advantages of RAID are: Availability, Capacity and Performance
Choosing the right RAID level and drive failure management can
increase Availability, subsequently increasing Performance and
Capacity The IFr-SIOIUZG RAID controller providw complete RAID
functionality and enhanced drive failure management.
3. 1 RAID Management
RAID stands for Redundant Array of Inexpensive Drive. The
advantages of using a RAID storage subsystem are:
- Provides disk spanning by weaving all connected drives into one
single volume.
- Increases disk access speed by breaking data into several blocks
when reading/writing to several drives in parallel. With RAID,
storage speed increases as more drives are added.
- Provides fault-tolerance by mirroring or parity operations
What are the RAID levels?
Non-RAID
RAID 0 Disk Striping N
Drive Drive
R: Highest R: High
w. Highest w: Highest
R: High R: Madlum
w: Medium M
mo 3 Siriplng with Parity R: High R: Medium
on dedicated dEk w: Medlum w: Low
mm 5 Striping with R: High R. High
interspersed pari w: Medium w: Low
[FT-3 lOlUZG Instruction Manual 3-1
NRAID
Disk Spanning CO 2 GB Hard Drive
E (:O 3 GB Nam Drive
E G) l GB Ham Drive
E (j 2 GB Hard Drive
||
Minimum
Disks r uired
Capacity N
Redundancy No D""'
l 2010|v2=8GBLowcailJrive
NRAID stands for Non-RAID The capacity of all the drives are
combined to become one logical drive (no block striping). In other
words, the capacity of the logical drive is the total capacity of the
physical drives. NRAID does not provide data redundancy
JEOD
Single Drive Control (1) 2 GB Hard Dnve
Lawn-mm:
[Bub-i um
T -
Minimum 1 ' E G) « Gs Ham um
Disks reguired “W
Cagaciy 1 = E ace Hard nme
Redundancy No wam
[BOD stands for Just a Bunch of Drives. The controller treats each
drive as a stand-alone disk, therefore each drive is an independent
logical drive, 1801) does not provide data redundancy
3-2 lnfortrend
RA“) 0 Loglcll mm
Disk Striping Phyllcal mu:
Mimmum
Disks re uired
Capacity N
Redundancy N
RAID 0 provides (he highest performance but no redundancy. Data in
the logical drive is striped (distributed) across several physical drives,
RAID 1
Disk Mirroring Lulu" an“
thllcnl Dlsk:
RAID 1
Disks uired 2
Ca ac' N12
Redundanq Yes
RAID 1 mirrors the
dam stored in one hard drive to another. RAID 1 can only be
performed with two hard drives. If there are more than two hard
drives, RAID (0+l) will be performed automatically.
—.....—__—
IFT-310IUZG Instruction Manual 373
RAID (0+1)
Disk Striping with
Mirroring
RAID (0+1) combines
RAID 0 and RAID 1 - Mirroring and Striping. RAID (0+1) allows
multiple drive failure because of the full redundancy of the hard
drives, If there are more than two hard drives assigned to perform
RAID 11 RAID (0+1) will be performed automatically.
@ IMPORTANT:
lRAID (0+1)" will not appear in the list of RAID levels suppurted
by the controller. If you wish ta perfurm RAID 1, the controller
will determine whether to perfurm RAID 1 ar RAID (Oi-1). This
will depend on the drive number that has been selected for the
logical drive.
Loqlnal Dm- Phylletl nuns
RAID 3
Disk Striping with
Dedicated Parity Disk
n-utund
RAID 3
Minimum
Disks required
Ca aci
Redundancy
RAID 3 performs
Block Striping with Dedicated Parity. One drive member is dedicated
to storing the parity data. When a drive member fails, the controller
can recover/ regenerate the lost data of the failed drive from the
dedicated parity drive.
3‘4 lnfortrend
RA“) 5 Logical Drive Physical Dllkt
Striping with
Interspersed Parity
sm I - o nondcdlcmd Purity
pain} n z)
stuck. 4
sum 5
mm, mm
RAID 5
Minimum
Disks required
Ca aci
RAID 5 is similar to
RAID 3 but the parity data is not stored in one dedicated hard drive.
Parity information is interspersed across the drive array. In the event
of a failure, the controller can recover/ regenerate the lost data of the
failed drive from the other surviving drives‘
3.2 Drive Failure Management
3.2.1 Global and Local Spare Drive
Local Spare Drlva Local Spare Drive is a standby drive
assigned to serve one specified logical
drive, When a member drive of this
specified logical drive fails, the Local
Spare Drive becomes a member drive and
automatically starts to rebuild.
wn-n cm momw
arm his, the Local
Spam Drlv- joint m-
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ID mmlld.
Logical Drive
Aulgm on. Lml Spln i .
Drlve m a loglull unv- L09lca| Dere
Global Spare Drive does not only serve one specified logical drive.
when a member drive frum any of the logical drive fails, the Global
Spare Drive will join that logical drive and automatically starts to
rebuild.
_.———-—_
IFT-3101U2G Instruction Manual 3-5
Global Spar: Drive Global Spare Drive Gm, span mm, "W.
GSQ my Icglcll urlm.
Logical Dnve o Logical Drive 1 Logical Dnve 2
Globtl 59". ml" man a nun-w drlvn from any
Ioglul arm lllll, the GI Spire
mm Jolns um loglc-l drlv M
ammmlully mm In mud.
Logical Drive a Loqlcal Drive 1 Logical Dnve 2
The lFT—3101U2G RAID controller provides both Local Spare Drive
and Global Spare Drive funclions. On cermin occasions, applying
these two functions together will better fit various needs, Take note
though that the Local Spare Drive always has higher priority than
the Global Spare Drive.
——
3 -6 Infomend
In the example shown below, the member drives in Logical Drive 0
are 9 GB drives, and the members in Logical Drives 1 and 2 are all
4 GB drives. It is not possible for the 4 GB Global Spare Drive to join
Logical Drive 0 because of its insufficient capacity. However using a
9GB drive as the Global Spare drive for a failed drive that comes from
Logical Drive 1 or 2 will bring huge amount of excess Capacity since
these logical drives require 4 GB only. In the settings below, the 9 GB
Local Spare Drive will aid Logical Drive 0 once a drive in this logical
drive failed If the failed drive is in Logical Drive 1 or 2, the 4 GB
Global Spare drive will immediately give aid to the failed drive.
Local Spir- Driv-
Glob-I Sp-re Drive
“gm,
,» v, Local Spare Drive Amy;
/ . nu nigh-r priority nun
/ ‘. Giobll Spur. nrm‘
«can (our
rlga
ma) (ma
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Logical Dflve D Logical Drive | Loglcal Drive 2
3.2.2 Identifying Drives
Assuming there is a failed drive in the RAID 5 logical drive, make it a
point to replace the failed drive with a new drive to keep the logical
drive working.
When trying to remove a failed drive and you mistakenly removed
the wrong drive, you will no longer be able to read/ write the logical
drive because the two drives may have already failed.
To prevent this from happening, the controller provides an easy way
of identifying for the failed driver That is, the read/write LED of the
failed hard drive will light. This LED will prevent you from removing
the wrong drive, and is also helpful when locating for a drive.
IFT-3101U2G Instruction Manual 3-7
Flash Selected SCSI Drive
The Read/Write LED of the drive you selected
will light steadily for about one minute,
Flash All SCSI Drives
The Read/ Write LED of all connected drives "“""°"°"
will light for about one minute. If the LED of the
defective drive did not light On the "Flash .
Selected SCSI Drive” function, use "Flash All
SCSI Drives". The "Flash All SCSI Drives"
function will light LEDs of all the drives except
the defective one.
as.
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3-8 lnfortrend
3.2.3 Automatic Rebuild and Manual Rebuild
Automatic Rebuild
Rebuild uni the
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mam um
Elwbal ware
Any
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nuance in logicll
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ylnbal spu- dnvu
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- nvl Sw-p cma< TIM '
Id “W the
van drive
When a member drive in the logical drive failed, the controller will
first check whether there is a Local Spare Drive assigned to this logical
drive. If yes, it will automatically start to rebuild.
If there is no Local Spare Drive available, the controller will search for
a Global Spare Drive, If there is a Global Spare Drive. it will
automatically rebuild the logical drive.
If neither Local Spare Drive nor Global Spare Drive is available, the
controller will not try to rebuild unless the user applies a forced-
manual rebuild.
Manual Rebuild
When a user applies forced-manual rebuild, the controller will first
check whether there is any Local Spare Drive assigned to this logical
drive. If yes, it will automatically start to rebuild.
[FT—3101U2G Instruction Manual 3-9
If there is no Local Spare Drive available, the controller will search for
a Global Spare Drive. If there is a Global Spare Drive/ it will
automatically rebuild the logical drive.
Usel applles
lowed-manual
rebulld
Any
Local Spare Drlve
assigned to mu
qulcal drivn?
Rebuild using me
Loci! Spare Drive
Any
Global Spare Drive
assigned to ihls
qulcal drlve”
Rmulld using me
Global Spare Dflve
Has the lallea awe
been replauevfl
Rebulld using the
replaced awe
No
wait Var
manual rebuild
If neither Local Spare Drive nor Global Spare Drive is available, the
controller will detect the SCSI channel and ID of the failed drive, Once
the failed drive has been replaced by a new drive/ used drive, it starts
to rebuild using the replaced drive. If there is no available drive for
rebuilding, the controller will not try to rebuild again until the user
applies another forced-manual rebuild.
3.2.4 Concurrent Rebuild in RAID (0+1)
RAID (0+1) allows multiple drive failure and concurrent multiple
drive rebuild. Newly replaced drives must be scanned and set as
Local Spare Drives. These drives will be rebuilt at the same time (you
do not need to repeat the rebuilding process for each drive),
3-10
lnfonrend
3.3 Disk Array Parameters
3.3.1 Rebuild Priority
Rebuilding time will depend on the capacity of the logical drive. The
IFT-3101U2G RAID controller provides background rebuilding ability.
Meaning, the controller is able to serve other 1/0 requests while
rebuilding the logical drives, The rebuilding process is totally
transparent to the host computer or the operating system.
The background rebuild process has four priority options:
- Low
3 Normal
- Improved
- High
The default priority is ”Low” which uses the controller’s minimum
resources to rebuild. Choosing “Normal" or ”Improved" will speedup
the rebuilding process and choosing "High” will use the controller’ 5
maximum rsources to complete the rebuilding process at the shortest
time,
Rebuild priority can be configured through the REE-232C Terminal
Interface, GUI RAID Manager or the front panel.
3.3.2 Verify-after-Write
The controller has the ability to force the hard drives to verify after
data has been written to the media of the HDD. There are three
selectable methods:
- Verification on LD Initialization Writes
Performs Verify-after-Write while initializing the logical drive.
0 Verification on LB Rebuild Writes
Performs Verify—after—Write during the rebuilding process.
- Verification on LB Normal Drive Writes
Performs Verify-ufter-Write during normal I/O requests.
Each method can be enabled or disabled individually. Hard drives
will perform Verify-after-Write according to the selected method
@: IMPORTANT:
The "Verification on LB Normal Dn'vz Writes” method will affect
”write” performance during normal use.
IFT-3101UZG Instruction Manual 3-ll
3.4 Cache Parameters
3.4.1 Optimization for Sequentiai or Random IIO
When using RAID with applications such as video or image oriented
applications, the application reads/ writes from the drive using Large
block, sequential files instead of small-block, random access files. The
lFT-3101U2G RAID controller provides the options to optimize for
large—sequential 1/0 or optimize for small-random l/O access.
"Optimization for Sequential I/O" provides larger stripe size (block
size, also known as Chunk size) than “Optimization for Random I/O".
A lot of the controllens internal parameters will also be changed to
optimize for sequential or random 1/0. The change will take effect
after the connoller rebools,
If the existing logical drives were built with “Optimization for
Random 1/0”, these logical drives will not read/ write when using
"Optimization for Sequential I/Of’ (shows "INVALID") and vice versa
because the stripe size is different. Change it back to the original
setting and reset the controller to make available the logical drive data
again.
@ IMPORTANT:
Changing the setting to "Optimization for Sequential 1/0” or
“Optimization for Random l/O” should be pedanned only when
no logical drive exist. Otherwise, you will not be able to access the
data in the logical drive later on,
3.5 Drive-Side SCSI Parameters
3.5.1 SCSI Motor Spin-up
When the power supply is unable to provide sufficient current for all
the hard drives and controllers that are powered-up at the same time,
spinning—up the hard drives serially is one of the best way of
consuming lower power-up current.
By default, all hard drives will spin-up when powered-an. These hard
drives can be configured so that all of them will not spin-up at power-
On There are 3 methods of spinning-up the hard drive’s motor: Spin-
up at power—on, Spin-up serially in random sequence or Spin-up by
SCSI command, Please refer to the hard drive‘s user's manual for
instructions on configuring the hard drive using the ”Spin-up by SCSI
3 - l 2 lnfomend
command”. The procedure for each brand/model of hard drive
should vary.
Configure all the hard drives as above and enable ”SCSI Motor Spin-
Up" in DriveSide SCSI Parameters. Power off all hard drives and
controller, and power them on again. All the hard drives will not spin-
up at this time, The controller will then spinfup the hard drives one by
one at four seconds interval.
@ IMPORTANT:
If the drives are configured as “Delay Motor Spin—up" or “Motor
Spin-up in Random Sequence," some of these drives may not be
ready yet [in the controller to access when the system powers up.
Increase the disk access delay time so that the cont-roller will wait
a longer timefor the drive to be ready,
3.5.2 SCSI Reset at Power Up
By default, when the controller is powered up, it will send a SCSI bus
reset command to the SCSI bus. When disabled, it will not send a SCSI
bus reset command on the next power—up.
When connecting dual host computers to the same SCSI bus, the SCSI
bus reset will interrupt all the read/ write requests that are being
performed, This may cause some operating systems or host computers
to act abnormally. Disable the "SCSI Reset at Power-up” to avoid this
situation.
3.5.3 Disk Access Delay Time
Sea the delay time before the controller tries to access the hard drives
after power—on. The default is 15 seconds,
3.5.4 SCSI I/O Timeout
The “SCSI I/O Timeout” is the time interval that the controller waits
for a drive to respond. If the controller attempts to read data from or
write data to a drive, but the drive does not respond within the SCSI
I/O timout value, the drive will be judged to be a failed drive.
When the drive itself detects a media error while reading from the
drive platter, it will retry the previous reading or recalibrate the head.
When the drive has encountered a bad block on the media, it has to
reassign the bad block to another spare block. However, all of this
IFT—S IOlUZG Instruction Manual 343
takes time. The time to perform these operations can vary between
different brands and models of drives.
During SCSI bus arbitration, a device with higher priority can utilize
the bus first. A device with lower priority will sometimes get a SCSI
I/O timeout when higher priority devices keep utilizing the bus,
The default setting for "SCSI I/O Timeout” is 7 seconds. It is highly
recommended not to change this setting. Setting the timeout to a lower
value will cause the controller to judge a drive as failed a drive [5 still
retrying or while a drive is unable to albiuate the SCSI bus. Setting the
timeout to a greater value will cause the controller to keep waiting for
a drive, and it may sometimes cause a host timeout,
3.5.5 Maximum Tag Count
The maximum number of tags that can be sent to each drive at the
same time. A drive has a built-in cache that is used to sort all of the
I/O requests (“tags") which are sent to the drive, allowing the drive to
finish the requests faster. The cache size and maximum number of
tags varies between different brands and models of drive. Using the
default setting — “32" — is highly recommended. Changing the
maximum tag count to "Disable" will cause the internal cache of the
drive to be ignored (i.e., not used).
3.5.6 Periodic Drive Check Time
The ”Periodic Drive Check Time" is an interval for the controller to
check all of the drives that were on the SCSI bus at controller startup
(a list of all the drives that were detected can be seen under ”View and
Edit SCSI Drives"). The default value is “Disabled". “Disabled" means
that if a drive is removed from the bus, the controller will not be able
to know - so long as no host accesses that drive. Changing the check
time to any other value allows the controller to check — at the selected
interval — all of the drives that are listed under "View and Edit SCSI
Drives." If any drive is then removed, the controller will be able to
know — even if no host accesses that drive.
3.5.7 SAF-TE Enclosure Monitoring
What is SAP-TE?
SAP—TE stands for SCSI Accessed Fault-Tolerant Enclosures. It is an
enclosure management technology that uses the SCSI bus to interact
with the controller. A SAF-TE—compliant enclosure monitors the fan
344 Infortrend
temperature, power supply, UPS and also provides drive status
LED's.
How does it work?
The SAP-TE device, which is often a back-plane within a drivefbay
enclosure, must occupy a connector on one of the drive channels’ SCSI
cabla, The presence of a SAP-TE device will be detected and its
presence will be displayed in the BIOS configuration utility, Text
RAID Manager and the GUI RAID Manager programs. The RAID
controller communicates with the SAF-TE enclosure with standard
SCSI commands, polling the device in order to get SAP-TE
information,
The default value for "Periodic SAP-TE Device Check Time" is
"Disabled", If the enclosure does have a SAF—TE device and features,
enable the controller to poll the device by selecting a time interval. The
RAID controller will then check the SAP-TE device status at that
interval.
SAP-TE Support
I9
“ND /um..u..
ermrllen Controller SiniN-IM
fflw/ cmmaF-n
gees kg“:
ennui-n Dmctun- hmp‘rlmlhll m...
indlunwl Sir-Ho'- "mum
SAF-TE chipsel connects to the drive Channel Nine
controller together with the ulnar SCSI drlves.
3.5.8 Periodic Auto-Detect Failure Drive Swap
Check Time
The "Drive«Swap Check Time" is the interval at which the controller
checks to see whether a failed drive has been swapped When a logical
drive’s member drive fails, the controller will detect the failed drive
(at the selected time interval). Once the failed drive has been swapped
lFT-3101UZG Instruction Manual 3—15
with a drive that has adequate capacity to rebuild the logical drive, the
rebuild will begin automatically,
The default setting is "Disabled," meaning that that the controller will
not Auto-Detect the swap of a failed drive. To enable this feature,
select a time interval,
3.6 Dynamic Logical Drive Expansion
3.6.1 What Is It and How Does It Work?
Before Dynamic Logical Drive Expansion, increasing the capacity of a
RAID system using traditional methods meant backing up, re—creating
and then restoring, Dynamic Logical Drive Expansion allows users to
add new SCSI hard disk drives and expand a RAID 0, 3 or 5 Logical
Drive without powering down the system
3.6.2 Two Modes of Dynamic Logical Drive Expansion
There are two modes of Dynamic Logical Drive Expansion: Mode 1
and Mode 24
Dynamic Logical Drive Expansion
Mode 1 Mode 2
Mode 1 Expansion involves adding more SCSI hard disk drives to a
logical drive, which may require that the user obtain an enclosure
with more drive bays. The data will be re-siriped onto the original and
newly added disks.
3-16 lnfoflrend
RAID Expansion - Mode 1
RAlD 5 Loulnal DYIVL‘VAGE —‘ Add-m New Drwes
RAM) 5 Logmsl Dylan sell ~
In the figure above, new drives are added to increase the capacity of a
4Gigabyte RAID 5 logical drive. The two new drives increase the
capacity to 8 Gigabytes.
Mode 2 Expansion, on the other hand, requires the same number of
higher-capacity SCSI hard disk drives for a given logical drivel
RAID Expansion - Mode 2 11/3)
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a m men-m mm fills outing me copy and
Replica, me logical all“ will still be sun-lam in
access
The figure above illustrates expansion of the same GLGigabyle RAID 5
logical drive using Mode 2 Expansion, Drives are copied and replaced,
one by one, onto three higher-capacity drives.
lFT-3101UZG Instruction Manual 3-17
RAID Expansion - Mode 2 (2/3)
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Couy and mi.“ m- mh" mumbvrdiwn w.- w on.
mm“ me membev mm; mm nun rem-mu
Copy and Replace "ch mmw mini am all me
numb“ aim hm hm mums, mom me
vswn Ewan-ion" m m m. lddlflorm mam“,
This results in a new 4-Gigabyte, RAID 5 logical drive composed of
three physical drives. The 4 Gigabytes of increased capacity is in a
new partition
RAID Expansion - Mode 2 (3/3)
mammal
mu (m!) — —
an" the sum Explnslm, me mammal cap-city
wm “p... n mot-flu pun-um. mung in. mu
“may [ma the gamma unvnon nqulm 0s
suppun
@ IMPORTANT:
0 The increased capacity from Made 1 Expansion of a logical
drive win be a new partition.
0 At the lime of this printing, the firmware does not support the
"Copy and Replace" function that is required for Mode 2
Expansion. Third-party hard disk utilities may be used for
Made 2 Expansion of logical drives, Laler versions of the
3 - l S lnfcrtrend
firmware will support “Copy and Replace."
3.6.3 Example: RAID Expansion in Windows NT® Server
Limitations When Using Windows NT0 4.0
1. Only the Windows NT” Server Disk Administrator includes the
Extend Volume Set function; Windows NT0 Workstation does not
have this feature.
2. The system drive (boot drive) of a Windows NT0 system cannot
be extended.
3 The drive that will be extended should be using the NTFS file
system.
The Example:
The following example demonstrates the expansion of a 900MB RAID
0 logical drive. The HyperTerminal emulation software that comes
with Windows 95W/Widnows NT” is used to connect to the RAID
controller via RS-232.
min iii-(DI)
min- uni
lFT-SIOIUZG instruction Manual 3-19
You can View information about this drive in the Windows NT0
Server's Disk Admmxsh’ator.
v hm fun-mm n m
_—.—-
3-20 Infortrend
Place the cursor on Disk 1, right-click your mouse, and select
"Properties.” You will see that the total capacity for the Drive E: is just
under 900MB.
IFT-S 101 UZG Instruction Manual 3»21
Follow the steps described in secfien 7.2.8 to add SCSI disk drives and
perform Mode 1 Dynamic Logical Drive Expansion.
m mum-m sun-x flmulm.
m". m:
I?
The 900MB logical drive has become a 1800MB logical drive. Place the
cursor on that logical drive, and then press i
-—.—___.
3 —22 Infortrend
From the menu, select Partition Logical Drive. You will see that the
ISODMB lngical drive is composed of two 900MB partitions.
no “man rmm... ash-mm mum)
mm 2121 m
IS
nu.- m: cm.-
mm In m1 am.
l“!
Follow the directions in section 7.3.1 to map the new partition to a
Host LUN. The new partition must be mapped be a hosf LUN in order
for the HBA (host-bus adapter) to see it. Once you have mapped the
partition, reboot Windows NT'. The HBA should be able to detect an
additional "disk"
[FT—3101U2G Instructinn Manual 3-23
Return to Windows NTrs Serve/s Disk Administrator. There now
exxsts a Disk 2 with 900MB of free space. Click on Disk 2 to select it.
, m» Amhhnmm
900MB
-Dik2
500MB
El warm I]
3-24 [nfortrend
The screen will display that volume set of Drive E: has been extended
by the 900MB in Disk2. Move the cursor fo "Commit Changes Now" to
confirm that you want the free space to become a part of the same
[051ml drive.
—_——-—-—
IFT43101UZG Instruction Manual 3-25
Logical Drive E: is now composed of two 900MB partitions with a total
volume of ISDUMB. To see this, hold down on the  key and
select both Disk 1 and Disk2; then right—click your mouse and select
"Properties."
_—
3-26 lnfonrsnd
Drive E: now has a capacity Just under 1800MB.
|| ll'mmeP.
————
lFT»3 lOlUZG Instruction Manual 3—27
Chapter 4 Hardware |nsta||ation
4.1 Locations of the Parts
IFT-3101 V212
Ready
4.1.1 FruntVie'w
POWER Lighted LED indicates power is on.
BUSY Unlil indicates no activity.
Blinking indicates data is being accessed.
Lighted LED indicates unprocessed cached data is
still in the memory.
ATTEN Lights when an error message appears or service is
required, e.g., when a drive fails and needs to be
replaced.
V A buttons Scroll through available options.
ENT button Choose or executes an option.
ESC button Returns to previous menu or cancel selection.
2 x 16 LCD Displays throughput during normal operation,
approximately 256Kbytes/ sec per division.
Displays message for configuration and management.
IFT-3101UZG Instruction Manual 4-1
41.2 The Main Board
U pgrade
sockets for
SIMM
module
AMD
5x86 CPU
_———_——
4-2 Infomend
413 The Daughterboards
Top View of Ultraz Wide SCSI Daughterboard OFT-9152)
160-pin docking
connector
SCSi Chip
160-pin docking V ”H" n
connector
, > I. v
scsn Chip i; g
ivtgsms‘ r
4243“ ‘
n v,
wdi u’fiw‘u
man «an...
ii:
IFT-3101UZG Instruction Manual
Top View of Fibre Daughterbuard (IFT-9152F)
160-pin docking
conneclor
Fibre Chwps
4.1 4 The Back-plane Boards
Back-plane Board for Main Board (IFT-915852A)
160-pm _h.‘,_
docking E-
connector l §
3 3
3 a
(U
f} E
§ 5
no Port m 0
Fault-bus
Plus Port
Connector
Rs-zszc Pon(COM1)
——
4.4 Infomend
Back-plane Board for UllraZ Wide SCSI Daughterboard
(IFT-91SBBZB)
Back-plane Auxlliary
Connector (JS)
160-pin
docking
connector
Fault-bus Plus Pun
IRS-2320 Port (COM2)
Back-plane Board for Ultra Wide Differential Daughterboard
(IFT-915832D)
Back-plans Auxiliary
Connector (J5)
160»pin
docking
conneclor E
n.
1).
SCSI 2
Ports a
LL
RS-ZSZC Port (COMZ)
__
[FT-3101U2G Instruction Manual 4-5
Back-plane Board for Fibre Channel Daughterboard (IFT-915882F)
Back-plane Auxiliary
Connector (J5)
160»pin
docking t.
conneclor g
Fibre i
Ports 3
‘—5
u.
RS-232C Port (COMZ)
4.2 Installing DRAM SIMM
@ IMPORTANT:
The IFT-3101 UZG controller requires a minimum of 8 Mbytes
DRAM SIMM (with or without parity function) installed in a
SIMM socket in order for it to operate. The controller is normally
delivered without any DRAM installed.
The following are guidelines on using DRAMs:
/ Use 72-pin Suns DRAM or 60m EDO RAM SIMM module. EDO
RAM is recommended tor better performance
I A SIMM, with or without parity, can be auto-detected by the
controller. A SIMM with parity is recommended for security.
/ The minimum DRAM required is 8 MBytes installed in a SIMM
socket, however 16 Mbytes is recommended.
¢ The controller supports 8 MB, 16 MB, 32 MB, 64 MB and 128MB
DRAM SIMM modules. Maximum DRAM size is 128 MBytes,
To install the DRAM SIMM:
1 Power off the system and disconnect the power connector.
21 If a daughterboard has been installed, remove it prior to installing
a SIMM module (or replacing an existing SIMM module).
4-6 lnfortrend
3. Insert the DRAM SlMM vertically into the socket making sure the
key is on the left side (1). Now push the module backward until
the hooks on both sides of the socket snap into place (2).
4.3 Installing the Fibre/SCSI Channel Upgrade
Daughterboard
The II-‘T-BlOlUZG’s base module has 2 Ultra2 Wide SCSI channels.
Installing a SCSI channel upgrade daughter board (WT—9152,
lFF-9152D or [Fr-9152F) onto the base module allows you to expand
up to a total of 4 SCSI channels. (Only one daughterboard can be
mounted at a time).
IFT-9152: 2 Ultra2 Wide SCSI channels
IFT—9152D: 2 Ultra Wide Differential SCSI channels
lFT-9152F: 2 single-loop Fibre channels
To install the SCSI channel upgrade daughterboard:
1. Make sure the power of the host system and drives are off.
2. Position the daughter board so that the SCSI connectors are facing
the rear of the controller.
3. While at it, make sure the connector pins on the daughter board
are aligned with the two header connectors on the controllers
main board.
4. Press both sides of the daughter board downward so that the
connector pins on the daughter board insert into the header
connectors on the main board. Make sure the daughter board is
seated properly.
lFT-3101U2G Instruction Manual 4-7
Daughterboard
RAID Controller Main Board
4.4 Power Connection
The power input and connection of the IFf-3102U controller is exactly
the same as those for hard disk drives. The power connection is shown
below,
——
4-3 lnfortrend
4.5 Daughterboards and Backplane Boards
Daugn erboard
Back—planes
Main Board
QQ
The connector on the rear side of the backplane board, which is used
for connecting the ‘l60—pin clocking connector of the mainboard, also
serves as the rear panel of the controller.
The backplane board is equipped with:
- Fault—bus, PC pork, redundant controller port, RS-232C port and
power connector
- SCSI pens (refer to the table below)
The table below lists the types of channels supported by the backplane
boards and the mainboard or daughterboarcl that corresponds to the
backplane boards
IFT-QlfrBBZA uzG
malnboard
IFT-91SSBZE lFF—9152
daughlarboard
lFT-915SBD - - "fr-915m
dauhlerboard
lFT-915SEZF - |rmrszr
daughterboard
' Channel 0 on each backplane board can be oonfigured as elmer s SCSI port or
Synchronized Cache pen for controller redundancy.
lFT-3 10 l UZG Instruction Manual 4-9
4 5.1 Selecting an Appropriate Backplane Board
The table below lists the back—plane boards needed for various mam
board and daughttrboard configurations.
Main Board 0mm
IFT»3101UZG nuns
IFT-91SBEZA
lFl-9152 IFT-915852A 4 -
lFT-91ESB2B
IFT-B'52D lFT-915552A 2 2 -
IFT-91SBBZD
|FT—9|52F lFT-9158I32A 2 - 2
IFT-915552F
4.5.2 Back-plane Auxiliary Connector Cable
IMPORTANT:
The following applies when a duughtsvbmmi and da'ughterbanrd
buckfplane are installed.
The three daughtelboard back-planes (IFI'QISBBZB, IFI-9158BZD and
IFT—QISBBZF) include a back-plane auxiliary connector cable. The
cable supplements power to the daughterboard back—plane and must
be installed for proper operation. To install, connect one end of the
cable to 13 on the daughterboard back-plane and the other end to 15 on
the main board back-plane (IPT-flSBBZA).
Bank-plane Auxiliary
Connector Cable
44 0 lnfortrend
4.6 Serial Port Connection and Setup
The IFT-3101U2G controller can be configured via a PC running a W-
100 terminal emulation program, or a VT-100 compatible terminal.
The provided interface cable converts the RS-Z’SZ signal of the Ill—pin
header connector on the controller into a 9»pin D—Sub male connector
The pin layout of the 9~pin D»Snb male connector is similar to that of a
PC’s serial port and is set as a DTE device. The proper connection of
the cable and pin layout is shown below.
Pln 1
The following are guidelines on using the serial port:
- The serial port's default is set at 9,600 band, 8 bit, 1 stop bit and no
parity. Use the COMl serial port of the controller.
0 In most cases, connecting RD, TD and SG are enough to establish
communication with a terminal,
- If you are using a PC as a terminal, any of the VT—lOO terminal
emulation software will suffice. Microsoft” Windows includes a
terminal emulation program as presented with the ”Terminal"
icon in the Accessories windowi
The baud rate can be changed using the front panel. To change the
baud rate:
Press ENT for two seconds to enter View and E:
the Main Menu Press 7 or A to Configurat on
select "View and Edit Configuration
u", then press ENT.
lFT—3|01UZG Instruction Manual 4-11
Select ”Communication Parameters
,, Parameters
u , then press ENT.
Select "RSZSZ Configuration ..“, then RS‘232
press ENT.
Select ”COM‘l Configuration ..", then COMI
Communication
Configuration ..
press ENT. Configuratlon . .
Select "Baud-rate 9600 ..", then press
ENT.
Baud—rate
Press V or A to select the baud rate,
9600
Mill
Baud-rate 9600
then press ENT for 2 seconds to Change to 35400?
confirm the selected baud rate.
* The available baud rates are: 2400,
4800, 9600, 19200 and 38400,
4.6 Basic Operational Setup
An example at the operational setup is shown below:
RAID scsl cable
Commller
Host cno
Drive CH!
(Timur-Arm mum
. ,/
Hus! Computer
mmm. Emu-u?
SCSl cable Tum-mar
- The SCSI cable must be shorter than 12 meters using high—quality
SCSI cable and berminators.
- Channel 0 is connected to the Host system.
- Drives are connected to drive channels 1 and/ or 2.
4-12
lnfonrend
6 SCSI nodes on the same channel have their own unique ID
number.
- Both the Host and drive SCSI cables are properly terminated.
- The terminator of all the hard drives must be disabled.
- The power supply is attached.
0 All operation parameters are properly set.
To connect the components:
‘I. Make sure power is off or the power connector is disconnected.
2. Connect channel 0 of the controller to the Host system's SCSI port
using a suitable SCSI cable.
NOTE:
& Channel 01's the default Host interface using ID number '0‘. Any of
the channels can also be set as the Host interface. More than one
channel can he set as the Host interface when operating with
redundant Host m‘ multiple Hus! systems,
3. Make sure the host side of the SCSI cable is properly terminated.
4. Assign a unique 561 ID for every hard disks that are to be
connected on the same SCSI cable; between ID numbers ’0' and ‘6'
and ‘8’ and ’15’, The default ID of the controller's channel 0 is '7'.
5 Connect the other end of the drive SCSI cable to one of the
remaining channel on the controller.
6. Connect the connectors located at the middle of the drive 561
cable to the hard disk(s).
7, Terminate the SCSI cable by installing an external terminator on
the last connector. Terminators on all the hard drives must be
removed so that removing a hard drive will not affect cable
termination,
4.10 In-band SCSI
4.10.1 What is it and why do you need it?
These days more and more external devices require communication
with the host computer for device monitoring and administration.
This is usually done through RS—Z’SZC ports.
lFT-3101UZG Instruction Manual 4-13
Infortrend now offers an alternative means of communication for its
RAID controllers—In—band SCSI. The traditional way for SCSI
controllers to communicate with tlle host computer has been via
software (such as the GUI RAID Manager) using an RS-ZSZC
connection. With In-band SGI, integramrs have more flexibility. They
may use RS—232C or the existing SCSI cable instead.
How does it use the SCSI cable? In-band Sml technology translates
the original commands into standard SCSI commands. These SCSI
commands are then sent to and received from the SCSI raid controller.
The GUI RAID Manager can administrate the RAID controller just as
it could before via RS—232C. (Note: It is assumed that users of In-band
SCSI possess the following: a third»party SCSI adapter and a channel
on their Inforh-end RAID controller that can be designated as a host
channel.) Both of these are required for In-band SCSI communication
between the host and the RAID controller, )
4.10.2 How Do You Configure the GUI RAID Manager to Use
In-band SCSI?
4. 10. 2. 1 RAID Controller Adjustments
Don't disconnect the RS—ZSZC cable yet! It is required for another 10
minutes or so. Some adjustments must be made to the RAID controller
and to the host computer’s SNMP settings before the two can
communicate using SCSI commands. (Note: The SNMP settings must
be changed prior to installation of the GUI RAID Manager. See SNMP
Settings below for a detailed explanation.) The RAID controller
settings can be changed mung the Front Panel. (The front panel may
be different in appearance from the one shown in this example)
444 Infortrend
IFT-3101 v2.12
Ready
From the Main Menu, press V or A to Viewband Edit
select "View and Edit Configuration Conflq Perms
Parameters. "
Press ; and then use the V or A Host—slde 5051
to select “Host-side SCSI Parameters." Parameters
Then press 4
You will need to make adjustments in the following four submenu's:
Peripheral Device Type, Peripheral Device Qualifier, Device Support
for Removable Media, and LUN Application, Different host operating
systems require different adjustments. book at the table below to find
the proper settings for your host operating system.
_—_._——
lFT-3I01UZG lnstmction Manual 4-15
Peripheral Device Type Parameters Reference
for Various Operating Systems:
Windows 0x1f 5 connected ‘ disabled All Undefined
NT‘” 4.0 s ‘ LUNs
‘ , , a : ,,
Windows 0x03 5 connected 5 enabled All Undefined
NT“ 50 LUNs
NefWareO 0x03 \ connected All Undefined
4x ‘ LUNS ‘
SCO 0x7f ! connected \ either is All Undefned
‘ Umx Ware 1
‘ 50x ‘
‘ 800 0x03 connected
] OpenServer
‘ZJX
Solaris" 0x7f connected ‘
2,5.xl2c6 ‘ okay ’ LUNs
(x86 and r j :
SPARC) ‘ 1
Linux ' 0x17 connected §
3 LUNs
4- 1 6 Infomend
Peripheral Device Type Settings:
1 Sequential-access Dewoe ;
CD-ROM Device
Scanner Device
1 MO Device
‘ Unknown Device
,, ,, ”m, ,,, , , J
Example: Settings for Windows NT” 40
The settings for Windows NI“ 4,0 are provided here as an example.
For the settings for other operating systems, please refer to the table
above, Peripheral Device Type Parameters Reference for Various Operating
Systems.
On the front panel, use v or A to select Feriph Dev
"Peripheral Device Type Parameters"; Type Parameters
and then prss 4
(For this example, we assume that there Device Type _
are currently no peripheral devices.) No Device (0x7f)
Press V or A to cheese "Unknown Set Device Type?
Device-If". Unknown (Oxlf)
Press  to confirm the selection. Now that we have changed the
Peripheral Device Type, let us set the Peripheral Device Qualifier.
Press  to return to the sub-menu’s mentioned above. Use the
[FT-3IOIU20 Instruction Manual 4-17
arrow keys to scroll down to Device Qualifier., press V or A to select
"Device Qualifier Connected. "
The default setting is "Connected." If
your Front Panel reads "Disconnected,"
press  and you will be prompted
to change to "Connected". If your Device
Qualifier setting reads ”Connected,"
press  to return to the Host-side
SCSI submenu’s.
Use the V or A to select Support for
Removable Media, The default setting is
”Disabled,” If the LCD reads "Enabled,”
press  and you will be prompted
to accept a change. If the screen reads
"Disabled," press  to return to the
Host-side SCSI submenu’s.
Press 7 or A to select "LUN
Application"; and then press .
The default setting is "All Undefine
LUN."
Press  and use V or A to select
"Undefine LUN-O’s."
Press  to accept. The screen
should display the following message.
Device Qualifier
Connected
Supportflemovable
Medla - Disabled
LUN Appllcation—
All Undefine LUN
Applies to ?
Undefine LUN—O's
LUN Application-
Undefine LUN—O's
The RAID controller adjustments necessary to use In-band SCSI have
been completed. For locally accessing the host computer (see section
4.10.3.1, Local Connection — SNMP Not Required), all steps have been
completed. For remotely accessing the host computer, further
adjustments must be made (see section 4.10.3.2, Remote Connectzon —
SNMP Required).
4-18
Infomend
4.10.3 Uslng In-band SCSI In GUI RAID Manager
4.10.3.1 Loco) Connection - SNMP Not Required
If you are using the GUI RAID Manager on the host computer that is
using In—band SCSI 7— ie., ’Iocal access' -- SNMP service is not
required. You may now connect by going to FILE>CONNECT and
selecting the port address.
4.10.32 Remote Connection — SNMP Required
SNMP Service is required to administrate a RAID controller installed
in a remote computer. This passage describes how to establish a
connection from the GUI RAID Manager to a RAID controller that is
connected to a remote host via In-band SCSI. For information
regarding other operations and of the GUI RAID Manager, please
refer to the GUI RAID Manager User Guide.
IFT-3101UZG Instruction Manual 419
Manager Slte Agent Site
Wm NT Hoslcumynlev
b Wllh In—hanfl
GUl scm sump
RA“) Agent lflstallefl
Manager
In the figure above, the ”Agent Site“ is a host computer connected to 3
RAID controller via 3 SCSI cable The "Manager Site" is a Windows
N'IW system with the GUI RAID Manager. The Agent Site could be
running an operating system other than Windows NT“. Infortrend
provides the ln-band SCSI SNMI’ agents for the following operating
systems:
0 Windows W
0 N etWare
0 SCO OpenServer
0 SCO UnixWare
0 Sun Solaris"
The Manager Site should be a Windows NI“ Workstation or Server
with SNMP service and the GUI RAID Manager installed.
Basic Procedures to Establish the Connection
The following criteria must be met for the Agent Site and Manager
Site:
Checklist for Agent Site
1. The host computer is connected to the RAID controller via the
host 56] cable (the cable which is used to transfer data between
the host computer and the RAID — there's no need for an extra
SCSI cable)
2. The host computer's operating system has SNMP service installed.
4-20 lnfortrend
3. The host computer has the In-band SCSI SNMP agent installed for
the corresponding operating system. (The example described
herein is Windows NW.)
4. The host computer is up and running.
IMPORTANT:
@ This fullnwing applies in Windows NT79 4.0 with Straits Pack 3: if
the "SNMP Service" is installed ufln the Service Pack 3 has been
installed, Smite Pack 3 must be vie-installed in order fur the
SNMF servicz tn work properly.
Checklist for Manager Site
1. The system is running Windows NT" (Workstation ox Server) and
has SN MP Service installed.
2. The Infortrend GUI RAID Manager was installed with the "SNMP
Manager Site" Option selected.
3. The GUI RAID Manager is running.
IMPORTANT:
C? This following applies to Windows NT“ 40 with Service Pack 3: if the
“SNMP Service" is installed afler the Service Pack 3 has been installzd,
Service Pack 3 must be rte-installed in order for the SNMP service In
work properly.
Example Settings for Agent Site Using Windows NT
1. Install SNMP Service in Windows NT“. Look for the "Network"
icon in the Ccmtrol Panel. Double click on the ”Network" icon to
open it.
[FT-3 10] UZG Instruction Manual 4-21
m Et’mhul F'unul
Accexshlily Dale/Inns Devices
UDUDHS
$1 ., . iii}
Display Keybnald Licsnmg
fig
was
PI: Caid Regional SBI Adaolels
[FEM EKA] Settings
swam lave Devices
The Properties window appears. Choose the ”Service" tab. If the
SNMP Service is already installed, please gm ahead to step called
"Install the SNMI’ Agent and GUI RAID Manager." If the SNMP
Service is not yet installed, click on "Add" and choose "SNMP
Service" to install.
IMPORTANT:
@ This follnwing applies ta M/indows N7m 4.0 with Service
Pack 3: If the “SNMP Service" is installed afler the
Service Pack 3 has been installed, Service Pack 3 must be
rte-installed in order for [he SNMP service to work
properly.
2. Install the SNMP Agenls and GUI RAID Manager. The GUI RAID
Manager can install the In—band SCSI SNMP Agent during
installation. During GUI RAID Manager installation, be sure to
select both the "SNMP Manager Site” and "SNM'P Agent Site"
options. Complete the installation by following the on-screen
instructions.
4-22 Infomend
Example Settings for Manager Site
1, Install the SNMP manager and GU] RAID Manager During the
installation of GUI RAID Manager, click to select the option
"SNMP Manager Site." Complete the installation by following the
on-screen instructions.
$7 “WWW 5“
l7 mwmm
2. Run the GUI RAID Manager. Start the connection by choosing
F1LE>CDNNECT>SNMR
3. The "Setting of SNMP Interface“ window appears. Enter the II’
address and community name of the Agent Site. For "Agent-site
[FT-3101U2G Instmction Manual 4-23
Communication Type," choose "SCSI Bus Interface." The
”Controller Index" refers to the sequence of the RAID controller
which is going to be administrated. If only one RAID controller is
installed in the agent site computer, choose "0“. If there is more
than one RAID controller installed in the agent site computer,
choose "1" to administrate the second RAID controller. Choose “2“
to administrate the third RAID controller, etc.
4. After the connection is established, all of the operations in the GUI
RAID Manager are the same as before (please refer to the GUI
RAID Manager User Guide for complete details on its operation.)
4-24 Infomend

---

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