Rorke Data GX4L_2120S4_12I1 User manual

Installation and Hardware
Reference Manual
ISO 9001:2008
ISO 13485:2003 Certified
www.rorke.com
Galaxy HDX4 12 Bay RAID
iSCSI Host SAS / SATA Drives
7th Generation Fibre Channel RAID
With over 10,000 Galaxy units in the field, Rorke Data’s award
winning RAID products provide the performance, protection,
and expansion capabilities for diverse customer environments.
PLEASE READ BEFORE INSTALLATION
MODELS:
»GX4L_2120S4_12I1
12 BAY iSCSI Quad 1Gb to
SAS/SATA II RAID Subsystem
Single Controller
Rorke Data, An Avnet Company
7626 Golden Triangle Drive, Eden Prairie, MN 55344, USA
» Toll Free 1.800.328.8147 » Phone [phone] » Fax [phone]
Galaxy®HDX4
GX4L_2120S4_12I10411_HMN

Contact Information
Americas
Rorke Data Inc
7626 Golden Triangle Drive
Eden Prairie, MN 55344
USA
Tel: [phone]
Fax: [phone]
1
[e-mail]
http://www.rorke.com

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
ii
Copyright 2010
This Edition First Published 2010
All r ights r eserved. T his publ ication m ay no t be r eproduced, t rans-
mitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, elec-
tronic, mechanical, magnetic, optical, chemical, manual or otherwise,
without the prior written consent of Rorke Data, Inc.
Disclaimer
Rorke Technology makes no representations or warranties with res-
pect t o t he c ontents her eof and s pecifically d isclaims an y implied
warranties of merchantability or f itness f or an y p articular pur pose.
Furthermore, Rorke Data reserves the right to revise this publication
and to make changes from time to time in the content hereof without
obligation to notify any person of such revisions or changes. Product
specifications are also subject to change without prior notice.
Trademarks
Galaxy and the Galaxy logo are registered trademarks of Rorke
Data, Inc.
Solaris and Java are trademarks of Sun Microsystems, Inc.
All o ther names, br ands, products or s ervices ar e trademarks or
registered trademarks of their respective owners.

Galaxy Raid Installation and Hardware Reference Manual
iii
Warnings and Certifications
RESTRICTED ACCESS LOCATION:
This equi pment i s intended t o be i nstalled in a R ESTRICTED A CCESS
LOCATION only.
 Access can only be gained by SERVICE PERSONS or by USERS
who ha ve been i nstructed abou t t he r easons f or t he r estrictions
applied t o t he l ocation and ab out any pr ecautions t hat s hall be
taken; and
 Access is by an authorized person through the use of a TOOL or
lock and key, or other means of security, and is controlled by the
authority responsible for the location.
ELECTRIC SHOCK WARNING!
To Prevent Electric Shock:
1. Access t o t his equ ipment is gr anted only to t rained op erators an d
service personnel who h ave been instructed of a nd f ully u nderstand
the possible hazardous conditions and the consequences of accessing
non-field-serviceable units, e.g., system backplane or power supplies.
2. Unplug the s ystem bef ore you m ove i t or when i t has bec ome
damaged.
RELIABLE EARTHING!
Particular a ttention s hould be g iven to pr epare r eliable earthing with t he
power supply connections other than direct connections to the branch circuit
(e.g., us e of po wer strips). T he A C po wer c ords pr ovide t he m ain ear th
connection. Check proper grounding before powering on the enclosure.
OVERLOADING PROTECTION!
1. The enclosure should be installed according to specifications on a
chassis l abel. P rovide a s uitable po wer s ource w ith electrical o verload
protection.
2. Do not overload the AC supply branch circuit that provides power to the
rack. T he t otal r ack l oad should n ot ex ceed 8 0 percent of t he br anch
circuit rating.
BATTERY USE WARNING!
Risk of explosion if battery is replaced by an incorrect type. Dispose of used
batteries according to local ordinance.

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
iv
THERMAL PRECAUTIONS:
1. If installed in a closed or multi-unit rack assembly, the operating ambient
temperature of the rack environment may be greater than room ambient.
Appropriate m easures, s uch as increasing a irflow, s hould b e available
to maintain the temperature below 35°C.
2. The openings on the enclosure are for air convection. DO NOT COVER
THE OPENINGS.
3. To comply with safety, emission, and thermal requirements, all module
bays should be populated with plug-in modules. The system should not
be operated with the absence of any covers.
HANDLING PRECAUTIONS:
1. The s ystem c an ei ther be i nstalled i nto a s tandard EIA-310 1 9” r ack
cabinet or placed o n a desktop. Mec hanical loading of t he e nclosure
should be carefully handled to avoid hazardous condition. A drop or fall
could cause injury.
2. Lay this system on a reliable surface with desktop installation. A drop or
fall can cause injury.
3. Mounting this enclosure requires two people.
4. The enc losure c an weigh up t o 37Lbs ( 17kg) without di sk dr ives. With
disk drives loaded, the enclosure can weigh up to 60lb (24kg). A reliable
surface should be available to support this weight.
5. Disk drives should be installed after the enclosure is securely installed.

Galaxy Raid Installation and Hardware Reference Manual
v
FCC (applies in the U.S. and Canada)
FCC Class A Radio Frequency Interference Statement
This dev ice c omplies with P art 15 of t he F CC r ules. O peration i s
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device may accept any interference
received, including interference that may cause undesired operation.
NOTE:
This equipment has been tested and found to comply with the limits
for a C lass A di gital de vice, pur suant t o Part 15 of t he F CC R ules.
These l imits ar e des igned t o pr ovide r easonable protection a gainst
harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, i f n ot i nstalled an d us ed i n a ccordance with
the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely t o c ause har mful i nterference i n which c ase t he us er will b e
required to correct the interference at his own expense.
Any c hanges or modifications not ex pressly a pproved by t he par ty
responsible for compliance could void the user’s authority to operate
the equipment.
WARNING:
A s hielded po wer c ord i s r equired i n order t o m eet F CC em ission
limits and also to prevent interference to nearby radio and television
reception.
Use on ly s hielded c ables t o c onnect I /O devices t o t his e quipment.
You ar e c autioned t hat changes or m odifications not expressly
approved by t he par ty r esponsible f or c ompliance c ould v oid your
authority to operate the equipment.
This device is in conformity with the EMC.
CB
(Certified Worldwide)
This dev ice m eets t he r equirements of t he C B s tandard f or
electrical equipment with regard to establishing a satisfactory
level of safety for per sons using the device and f or the area
surrounding t he app aratus. T his s tandard c overs onl y s afety
aspects of the above apparatus; it does not cover other
matters, such as style or performance.

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
vi
CCC
For P ower S upplies’ c ompatibility to China Compulsory
Certification.
China RoHS
In Compliance with AeA China RoHS Regulations (SJ/T 11364-2006)
ITE BSMI Class A,
CNS 13438
(for Taiwan)
This device is in conformity with UL standards for safety.
Инструкция по безопасности
Модель:
FC to SAS/SATA 3U/16, 4U/24 Bay RAID Subsystem, Models, where “x” can
be “0-9”, “A-Z“, blank, or dash “x” for marketing purpose and no impact safety
related critical components and constructions.
1. Перед использованием оборудования внимательно прочтите
инструкцию.
2. Сохраняйте инструкцию для дальнейшего использования в работе.
3. Не допускайте попадания влаги на изделие.
4. Устанавливайте оборудование на устойчивую поверхность.
Падение может нанести ущерб оборудованию.
5. Соблюдайте климатические требования, использование
оборудование при температуре окружающей среды выше 50°С,
может привести к выходу оборудования из строя.
6. Размещайте шнур питания в недоступном для пользователя месте.
Запрещается ставить на шнур питания какие-либо предметы.
7. При работе с оборудованием необходимо учитывать все
предупреждения и замечания.
8. Если оборудование не используется в течении длительного времени,
отключите его от сети питания.
9. Запрещается вскрывать оборудование. Оборудование может

Galaxy Raid Installation and Hardware Reference Manual
vii
вскрываться только квалифицированным персоналом.
10. При возникновении одного из повреждений оборудования вызовите
обслуживающий персонал:
a. Повреждение шнура питания или вилки.
b.Оборудование не работает или его работа не соответствует
инструкции пользователя .
e. Оборудование повреждено.
f. Оборудование имеет очевидный признак поломки.
11. Источник питания должен быть установлен в соответствии с
инструкцией. Ток нагрузки и выходная мощность не должны
превышать указанных в спецификации.
Rorke is committed to being properly prepared and taking all
the necessary steps that will result in our compliance with the
new European d irective, RoHS ( 2002/95/EC), on o r bef ore
the specific dates set forth in those applicable laws and
regulations. Rorke is ap plying its o wn i nternal ef forts and
expertise and is working closely with customers and suppliers
to achieve compliance while maintaining an uninterrupted
supply of qual ity products. Rorke is c urrently i nvestigating,
evaluating, a nd q ualifying our m aterials and c omponents t o
ensure t hat pr oducts s old on or af ter 1 J uly 20 06, in s uch
territory, are in compliance with the above regulations.
Disposal of Old Electrical & Electronic Equipment (Applicable
in t he E uropean U nion and ot her E uropean c ountries with
separate collection systems)
This symbol on the product or on its packaging indicates that
this product shall not be treated as household waste. Instead
it s hall be ha nded o ver t o t he a pplicable c ollection point f or
the recycling of electrical and electronic equipment. By proper
waste handling of this product you ensure that it has no
negative c onsequences f or t he environment and hum an
health, which c ould o therwise b e c aused i f t his pr oduct is
thrown into t he gar bage bin. The r ecycling of m aterials will
help to conserve natural resources.
For m ore det ails ab out r ecycling of t his pr oduct, please
contact your l ocal c ity of fice, your hous ehold w aste disposal
service or the shop where you purchased the product.
}

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
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Table of Contents
CONTACT INFORMATION ............................................................ ERROR!BOOKMARK NOT DEFINED.
COPYRIGHT 2010 ..................................................................... ERROR!BOOKMARK NOT DEFINED.
This Edition First Published 2010 ........................................ Error! Bookmark not defined.
Disclaimer Error! Bookmark not defined.
Trademarks ......................................................................... Error! Bookmark not defined.
WARNINGS AND CERTIFICATIONS ................................................ ERROR!BOOKMARK NOT DEFINED.
TABLE OF CONTENTS ............................................................................................................... VIII
SAFETY PRECAUTIONS .............................................................. ERROR!BOOKMARK NOT DEFINED.
Precautions and Instructions ............................................... Error! Bookmark not defined.
ESD Precautions ................................................................. Error! Bookmark not defined.
ABOUT THIS MANUAL ................................................................ ERROR!BOOKMARK NOT DEFINED.
REVISION HISTORY ................................................................... ERROR!BOOKMARK NOT DEFINED.
WHO SHOULD READ THIS MANUAL? ............................................. ERROR!BOOKMARK NOT DEFINED.
Related Documentation ....................................................... Error! Bookmark not defined.
CONVENTIONS .......................................................................... ERROR!BOOKMARK NOT DEFINED.
Naming Error! Bookmark not defined.
Lists Error! Bookmark not defined.
Important Information ........................................................... Error! Bookmark not defined.
SOFTWARE AND FIRMWARE UPDATES ......................................... ERROR!BOOKMARK NOT DEFINED.
CHAPTER 1: INTRODUCTION
1.1 PRODUCT OVERVIEW ..................................................................................................... 1
1.1.1 Introduction........................................................................................................... 1
1.1.2 Enclosure Chassis ................................................................................................ 2
1.2 SYSTEM COMPONENTS .................................................................................................. 5
1.2.1 Drive Trays ........................................................................................................... 5
1.2.2 The RAID Controller Module ................................................................................ 5
1.2.3 Controller Module Interfaces ................................................................................ 6
1.2.4 Cache Module ...................................................................................................... 7
1.2.5 CBM (Optional Feature) ....................................................................................... 7
1.2.6 Power Supply Units .............................................................................................. 9
1.2.7 Cooling Modules ................................................................................................... 9
1.3 SYSTEM MONITORING .................................................................................................. 10
1.3.1 I2C bus ............................................................................................................... 10
1.3.2 LED Indicators .................................................................................................... 10
1.3.3 Audible Alarms ................................................................................................... 11
1.4 HOT-SWAPPABLE COMPONENTS .................................................................................... 11
1.4.1 Hot-swap Capabilities ......................................................................................... 11
1.4.2 Components ....................................................................................................... 12
1.4.3 Normalized Airflow ............................................................................................. 12
CHAPTER 2: HARDWARE INSTALLATION
2.1 INTRODUCTION .............................................................................................................. 1
2.2 INSTALLATION PREREQUISITES ........................................................................................ 1
2.3 SAFETY PRECAUTIONS ................................................................................................... 3
2.3.1 Precautions and Instructions ................................................................................ 3
2.3.2 Static-free Installation ........................................................................................... 6
2.4 GENERAL INSTALLATION PROCEDURE .............................................................................. 7
2.4.1 Installation Procedure Flowchart ................................................................................. 7
2.5 UNPACKING THE SYSTEM ............................................................................................... 7
Preinstalled Components ..................................................................................................... 9
Components to be Installed ................................................................................................. 9
2.6 RACK/CABINET INSTALLATION ......................................................................................... 9
Removing Chassis ............................................................................................................. 15
2.7 CONTROLLER INSTALLATION ......................................................................................... 16
2.7.1 Installing a Controller Module ............................................................................. 16
2.8 HARD DRIVE INSTALLATION........................................................................................... 17

Galaxy Raid Installation and Hardware Reference Manual
ix
Hard Drive Installation Prerequisites.................................................................................. 17
Drive Installation ................................................................................................................ 17
2.9 DRIVE TRAY INSTALLATION ........................................................................................... 18
2.10 INSTALLING CBM (OPTIONAL) ....................................................................................... 20
CHAPTER 3: SYSTEM CONNECTIONS
3.1 CONNECTION OVERVIEW ................................................................................................ 1
3.1.1 Cabling ................................................................................................................. 1
3.1.2 Network Topologies .............................................................................................. 2
3.1.3 Points of Failure ................................................................................................... 2
3.2 HOST CONNECTION TOPOLOGIES .................................................................................... 2
3.2.1 Sample Topology – Single-controller with Fault-tolerant Paths ............................ 4
3.2.2 Sample Topology – Single-Controller with Trunks ................................................ 5
3.3 EXPANSION LINKS .......................................................................................................... 7
3.4 CONNECTING OTHER INTERFACES ................................................................................... 9
3.5 CONNECTING POWER CORDS ....................................................................................... 10
3.6 POWER ON ................................................................................................................. 11
Check List 11
Power On Procedure ......................................................................................................... 12
Power On Status Check .................................................................................................... 13
LCD Screen ....................................................................................................................... 14
POWER OFF PROCEDURE ......................................................................................................... 15
CHAPTER 4: SYSTEM MONITORING
4.1 OVERVIEW .................................................................................................................... 1
4.2 STATUS-INDICATING LEDS ............................................................................................. 3
4.2.1 LED Overview ...................................................................................................... 3
4.2.2 LCD Keypad Panel ............................................................................................... 3
4.2.3 Drive Tray LEDs ................................................................................................... 4
4.2.4 LEDs on Controller Module .................................................................................. 5
4.2.5 Controller LEDs .................................................................................................... 6
4.2.6 Restore Default LED ............................................................................................ 7
How to Use the Restore Default Button? ............................................................................. 7
4.2.7 GbE Host Port LEDs ............................................................................................ 8
4.2.8 Ethernet Management Port LEDs ......................................................................... 9
4.2.9 PSU LEDs .......................................................................................................... 10
4.2.10 Cooling Module LEDs ......................................................................................... 10
4.3 AUDIBLE ALARM .......................................................................................................... 11
4.3.1 Overview ............................................................................................................ 11
4.3.2 Alarm Triggers .................................................................................................... 12
4.3.3 I2
C ...................................................................................................................... 12
CHAPTER 5: SYSTEM MAINTENANCE
5.1. OVERVIEW .................................................................................................................... 1
5.1.1 Maintenance ......................................................................................................... 1
5.1.2 General Notes on Component Replacement ........................................................ 2
5.2. REPLACING A CONTROLLER MODULE ............................................................................... 2
5.2.1 Overview .............................................................................................................. 2
5.2.2 Notes on Controller Maintenance ......................................................................... 3
5.2.3 Removing a Controller Module ............................................................................. 3
5.2.4 Replacing the Controller Module .......................................................................... 4
5.3. REPLACING OR UPGRADING MEMORY MODULES ............................................................... 5
5.3.1 Installation Overview ............................................................................................ 5
5.3.2 Selecting the Memory Modules ............................................................................ 6
5.3.3 DIMM Module Installation ..................................................................................... 6

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
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5.4. REPLACING A FAULTY CBM ............................................................................................ 7
5.4.1 BBU Fault Conditions: .......................................................................................... 7
5.4.2 BBU Warnings and Precautions ........................................................................... 7
5.4.3 Replacing a Faulty BBU ....................................................................................... 8
5.4.4 Replacing a Faulty Flash Backup Module .......................................................... 10
5.5. REPLACING A FAULTY PSU .......................................................................................... 10
5.5.1 Notes on PSU Module Maintenance .................................................................. 10
5.5.2 Replacing the PSU Module ................................................................................ 11
5.6. REPLACING A FAULTY COOLING MODULE ....................................................................... 13
5.6.1 Notes on Cooling Module Maintenance .............................................................. 13
5.6.2 Replacing a Cooling Module............................................................................... 13
5.7. REPLACING A HARD DRIVE ........................................................................................... 14
5.7.1 Hard Drive Maintenance Overview ..................................................................... 14
5.7.2 Replacing a Hard Drive ...................................................................................... 15
APPENDIX A: SPECIFICATIONS
A.1. TECHNICAL SPECIFICATIONS ........................................................................................... 1
A.2. CONTROLLER SPECIFICATIONS ........................................................................................ 3
A.3. POWER SUPPLY SPECIFICATIONS .................................................................................... 4
A.4. RAID MANAGEMENT ...................................................................................................... 5
A.5. FAULT TOLERANCE MANAGEMENT ................................................................................... 5
APPENDIX B: PINOUTS
B.1 GBE ETHERNET PORT PINOUTS (ISCSI HOST PORTS) ..................................................... 1
B.2 ETHERNET MANAGEMENT PORT PINOUTS ........................................................................ 2
B.3 DB-9 SERIAL PORT ........................................................................................................... 2
B.4 SAS EXPANSION PORT PINOUTS .................................................................................... 3
B.5 POWER......................................................................................................................... 3
Safety Precautions
Precautions and Instructions
• Prior to powering on the subsystem, ensure that the correct power range
is being used.
• If i t i s nec essary t o t ransport t he s ubsystem, r epackage a ll d isk dr ives
separately in the dr ive trays and i n the original package f oam blocks. I f
using the original package material, other replaceable modules can stay
within the enclosure.
• The Galaxy subsystems come with 12, 16, or 24 drive bays. Leaving any
of t hese dr ive b ays em pty will gr eatly af fect t he ef ficiency of t he airflow
within the enclosure, and will consequently lead to the system
overheating, which can cause irreparable damage.
• If a module fails, leave it in place until you have a replacement unit and
you are ready to replace it.

Galaxy Raid Installation and Hardware Reference Manual
xi
• Airflow Consideration: The subsystem requires an ai rflow clearance,
especially at t he front a nd r ear. A clearance of at least 18 to 20
centimeters i s r equired at t he r ear s ide a nd an y o bjects bl ocking t he
exhaust airflow, e.g., cables dangling at the fan outlet, should be avoided.
• Handle subsystem modules using the retention screws, eject levers, and
the metal frames/face plates. Avoid touching PCB boards and connector
pins.
• To c omply with s afety, emission, or t hermal r equirements, none of t he
covers or r eplaceable m odules s hould be r emoved. Mak e s ure t hat all
enclosure modules and covers are securely in place during operation.
• Be s ure t hat t he r ack c abinet i nto which t he s ubsystem chassis w ill be
installed pr ovides s ufficient v entilation c hannels and ai rflow c irculation
around the subsystem.
• Provide a soft, clean surface to place your subsystem on before working
on i t. Servicing on a r ough s urface m ay d amage t he ex terior of t he
chassis.
• If i t i s necessary to transport t he s ubsystem, r epackage al l dr ives
separately.
• Dual-redundant c ontroller models c ome w ith t wo R AID c ontrollers t hat
should al ways b e pr esent. S ingle-controller m odels c ome w ith a s ingle
RAID controller and a metal sheet is placed over the lower controller bay
at t he r ear of t he s ubsystem. S ince s ingle-controller m odels c annot b e
upgraded, this metal sheet should NEVER be removed.
ESD Precautions
Observe a ll c onventional anti-ESD m ethods while handling s ystem
modules. The use of a grounded wrist s trap an d an anti-static work
pad are recommended. Avoid dust and debris in your work area.
About This Manual
This manual:
 Introduces the Galaxy storage system series.
 Describes all major components in the system.
 Provides r ecommendations and details ab out t he har dware
installation process.

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
xii
 Describes how to monitor system operating statuses.
 Describes how to maintain the subsystem.
This manual does not:
 Describe components that are not user-serviceable.
 Give a d etailed description of t he R AID pr ocessing u nits or t he
RAID controllers within the subsystem.
Revision History
Rev. 1.0: Initial release.
Who should read this manual?
This manual assumes that its readers are experienced with computer
hardware installation and are familiar with storage enclosures.
Related Documentation
• Generic O peration Ma nual ( firmware oper ation v ia L CD k eypad
and terminal emulation)
These documents ar e i ncluded in t he product utility C D t hat c ame
with your subsystem package.
Conventions
From this point on and throughout the rest of this manual, the Galaxy
series i s r eferred t o as s imply t he “ subsystem” or t he “ system” and
Rorke is sometimes abbreviated as “Gal.”
Naming
Important Messages
Important m essages appe ar w here m ishandling of components is
possible or when work or der c an b e m is-conceived. T hese
messages al so pr ovide important i nformation as sociated with ot her
aspects of s ystem oper ation. T he word “ important” i s w ritten as
“IMPORTANT,” both capitalized and bold and is followed by text in
italics. The italicized text is the message to be delivered.
Warnings

Galaxy Raid Installation and Hardware Reference Manual
xiii
Warnings appear where overlooked details may cause damage to the
equipment or r esult in per sonal i njury. Warnings s hould b e taken
seriously. Warnings ar e e asy t o r ecognize. T he word “ warning” i s
written as “WARNING,” both capitalized and bold and is followed by
text in italics. The italicized text is the warning message.
Cautions
Cautionary messages should also be heeded to help you reduce the
chance of losing data or damaging the system. Cautions are easy to
recognize. T he word “ caution” i s written as “ CAUTION,” bot h
capitalized an d bo ld and is f ollowed by text i n i talics. T he i talicized
text is the cautionary message.
Notes
These messages i nform the r eader of es sential but no n-critical
information. T hese messages s hould be r ead c arefully as an y
directions or i nstructions c ontained t herein c an help you a void
making mistakes. N otes ar e eas y to r ecognize. T he w ord “ note” is
written as “NOTE,” both capitalized and bold and is followed by text
in italics. The italicized text is the cautionary message.
Lists
Bulleted Lists: Bulleted lists are statements of non-sequential facts.
They c an be r ead in a ny order. E ach s tatement i s preceded b y a
round black dot “•.”
Numbered Lists: Numbered l ists ar e us ed t o d escribe s equential
steps you should follow in order.
Software and Firmware Updates
Please contact your system vendor or contact Rorke’s technical
support t [e-mail] for t he l atest s oftware or f irmware
updates. NOTE that t he f irmware version i nstalled o n your s ystem
should pr ovide t he c omplete f unctionality listed in t he s pecification
sheet/user’s m anual. We pr ovide s pecial r evisions f or v arious
application p urposes. Therefore, D O N OT upgr ade your f irmware
unless you fully understand what a firmware revision will do.
Problems t hat oc cur dur ing t he updating pr ocess may c ause
irrecoverable errors and system down time. Always consult technical
personnel before proceeding with any firmware upgrade.

Galaxy GHDX4 iSCSI<>-SAS / SATA 12Bay Installation / Hardware Reference Manual
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1-1
Chapter 1
Introduction
1.1 Product Overview
1.1.1 Introduction
This c hapter br iefly introduces t he Galaxy® H DX4 i SCSI to SAS /
SATA RAID s ubsystem The HDX4 DS system co mes w ith four (4)
Gigabit E thernet host por ts on the R AID controller and de livers fast
I/O performance over
iSCSI packets.
Galaxy’s i SCSI s torage s upports net work i nitiators c ompatible with
the IETF (Internet Storage Name Server) iSCSI standard (RFC 3720)
with the following functionality:
 Access control via NetMask, IQN, and IP filtering
 iSNS & SLP device discovery
 CHAP access control security
 Jumbo frames
Internet SCSI (iSCSI) protocols are embedded in firmware and I/Os
and are rapidly processed via dedicated algorithms. The HDX4 DS is
built around reliable hardware and sophisticated RAID technologies.
I/O requests are packaged and transmitted over local area networks
(LANs), w ide ar ea net works (WANs), or t he I nternet us ing the
existing Ethernet network, and t hus t he t otal c ost o f ow nership i s
reduced. With the help of networking flexibility, the system is ideal for
location-independent data storage, backup, and retrieval.
The s ystem del ivers ex treme per formance t hat r esults f rom t he
combined p erformance o f multiple d isk dr ives and t he l evel of dat a
protection u nseen in other i SCSI s torages. F eaturing al l s tandard
RAID functionality, t he HDX4 DS subsystem provides a reliable
platform for IT oper ations such as bac kup, dat a-mining, or s trategic
data allocation.
Galaxy HDX4 12bay RAID System

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This system features a high-density architecture that supports up to
twelve (12) hot -swappable 6Gb/s SAS o r 3Gb/s SATA hard dr ives.
The s ystem i s po wered by a single RAID c ontroller f eaturing t he
latest A SIC667 as t he RAID engine. T he pr e-installed 2GB DDRII
RAM D IMM m odule c an b e up graded t o a 4GB capacity D IMM t o
support c omplicated ap plications t hat hold numerous I D/LUN
combinations.
In ad dition to t he e ase of i mplementation, t he HDX4 DS also
supports capacity expansion via its SAS links by attaching HDX4 DS
12 or 16 bay JBODs.
The modular nature of the system and the easy accessibility to
components ensure ease of maintenance.
NOTE:
On r eceiving and un packing your s ubsystem, pl ease c heck t he
package contents against the included Unpacking List. If any
modules ar e m issing, please c ontact your system vendor
immediately.
1.1.2 Enclosure Chassis
1.1.2.1 Chassis Overview
The HDX4 DS s ystem is housed i n a robust 2U chassis t hat i s
divided i nto front an d the rear s ections. K ey c omponents ar e
respectively ac cessed through t he f ront an d r ear pan els. T he
enclosure c hassis c an b e mounted i nto a s tandard 1 9-inch r ack or
enclosure c abinet us ing s upport br ackets t hat are s eparately-
purchased.
NOTE:
Components ac cessed t hrough t he f ront pan el are r eferred t o as
“Front P anel C omponents” and c omponents ac cessed t hrough
the rear panel are referred to as “Rear Panel Components.”
1.1.2.2 Physical Dimensions
The HDX4 DS comes in a 2U chassis with the following dimensions:
 Measured with f orearm handl es: 481mm x 8 9mm x 530mm
(width x height x depth)

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 Measured without f orearm handl es: 446mm x 88mm x
513mm (width x height x depth)
1.1.2.3 Front Panel Overview
The front section of the system features a 4x3 layout for twelve (12)
3.5-inch disk drives. The two (2) handles on the f ront of t he system
enable you to easily extract the chassis from a rack or cabinet. The
front view is s hown below. A des cription of eac h f ront panel
component is given below:
The front view of the subsystem without the bezel installed is shown
below:
HDX4 DS Enclosure Front View
The front panel components include:
• Drive bays with drive tray canisters: The drive bays
accommodate 6Gb/s SAS or 3Gb/s SATA 3.5” disk drives.
• Forearm h andles: The s ystem has r ight- and l eft-side
handles for easier rackmount handling.
1.1.2.4 Hard Drive Numbering
The front section of the HDX4 DS enclosure houses twelve (12) hard
drives in a 4x3 configuration. When viewed from the front, the drive
bays (slots) are numbered 1 to 12 from left to right and then from top
to bottom.

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Slot 1 Slot 2 Slot 3 Slot 4
Slot 5 Slot 6 Slot 7 Slot 8
Slot 9 Slot 10 Slot 11 Slot 12
Hard Drive Numbering
1.1.2.5 Rear Panel Overview
The enc losure r ear view is shown be low. T he r ear panel pr ovides
access to all enclosure components. A description of each rear panel
component is given below:
HDX4 DS Enclosure Rear View
The enclosure rear section accommodates the following components:
• RAID c ontroller m odule: The R AID c ontroller module
manages all functionalities provided with the system, and all
interface connectors are provided on the controller faceplate.
• CBM m odule (optional fe ature; l ocated w ithin th e R AID
controller module, if installed): A C BM (Cache B ackup
Module) is o ptional f or t he s ingle-controller HDX4 DS. T he
CBM c onsists of a BBU (Battery Backup U nit) and F BM
(Flash Backup Module). The BBU sustains unfinished writes
cached in memory and cached data is distributed to the FBM
in the event of a power outage in order to prevent data loss.
• PSU m odules: The hot-swappable P SUs supply po wer t o
the s ubsystem. P ower o n/off is controlled b y t he i ndividual
power switches on the power supplies.
• Cooling modules: The redundant cooling modules ventilate
the system to maintain a cooling airflow across the system.
1.1.2.6 Backplane Board
An internal backplane board separates the front and rear sections of
the enclosure. The backplane consists of traces for logic level signals
and low v oltage po wer paths. It c ontains no us er-serviceable
components.

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WARNING!
When i nserting a r emovable m odule, DO N OT U SE EXCESSIVE
FORCE! F orcing or s lamming a m odule c an dam age t he pi ns on
the m odule c onnectors ei ther on t he m odule i tself or on t he
backplane. G ently pus h t he m odule un til i t r eaches t he end of
module s lot. F eel t he c ontact r esistance and us e slightly m ore
pressure t o e nsure t he m odule c onnectors ar e c orrectly m ated. If
the m odule c omes w ith ejection l evers or r etention screws, us e
them to secure the module.
1.2 System Components
The HDX4 DS houses m any active c omponents and m ost of t hem
can b e ac cessed t hrough ei ther t he f ront or the rear p anel. T he
modular des ign of t he c omponents f acilitates t heir easy installation
and r emoval. H ot-swap m echanisms are i ncorporated t o e liminate
power surges and signal glitches that might occur while removing or
installing these modules.
1.2.1 Drive Trays
Drive Tray Front View
The system comes with twelve (12) drive trays with 1-inch pitch, 3.5-
inch 6Gb/s SAS o r 3Gb/s SATA d isk drives pre-installed. T he drive
bays are accessible from the enclosure front panel. Two (2) LEDs on
the front bezel indicate the operating statuses. A rotary bezel lock on
each drive tray secures the hard drive in place, while a release button
enables f ast retrieval of a hard drive. There ar e s crew holes on the
sides of the drive tray for securing hard drives to the drive tray.
WARNING!
Be c areful no t t o warp, t wist, or c ontort t he dr ive t ray in any w ay
(e.g., b y dr opping it or r esting heavy obj ects on i t). The dr ive t ray
has been customized to f it i nto the drive bays of t he system. If t he
drive bay superstructure is deformed or altered, the drive trays may
not fit into the drive bays.