IBM DS3500 Operating instructions

IBM System Storage DS3500 and EXP3500 Storage
Subsystem
Installation, User's, and Maintenance
Guide
GA32-0952-06


Note
Before using this information and the product it supports, read the general information in “Notices” on page 191 and see
the Warranty Information document that comes with the storage subsystem.
This edition applies to the IBM System Storage DS3500 and EXP3500 Storage Subsystem with controller firmware
version 7.70, and to all subsequent releases and modifications until otherwise indicated in new editions.
This edition replaces GA32-0952-05.
© Copyright IBM Corporation 2010, 2013.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Figures ...............v
Tables ...............vii
Safety ...............ix
Safety statements .............x
Chapter 1. Introduction ........1
What's new in this release ..........2
DS3500 storage subsystem overview ......2
EXP3500 storage enclosure overview ......3
Notices and statements in this document .....4
Features and operating specifications ......4
Models and optional devices .........6
Operating-system support ..........7
Product updates .............8
Best practices guidelines ..........8
DS3500 storage subsystem and EXP3500 storage
enclosure components ...........9
Disk drives and bezels..........10
Controllers .............12
Environmental service modules.......13
AC power supply and fan units ......13
DC power supply and fan units ......14
Battery units .............15
Software and hardware compatibility and upgrades 15
Software and firmware support code upgrades 15
Determining firmware levels .......17
Specifications ..............17
Area requirements ...........17
Temperature and humidity ........19
Electrical requirements .........20
Heat output, airflow, and cooling ......22
Chapter 2. Installing the storage
subsystem and storage enclosure . . . 25
Installing the DS3500 storage subsystem .....25
Inventory checklist ...........25
DS3500 installation overview .......26
Handling static-sensitive devices ......27
Preparing for installation .........28
Installing the DS3500 storage subsystem in a rack 29
Installing the EXP3500 storage enclosure.....29
Inventory checklist ...........29
Installing the EXP3500 storage enclosure in a rack 30
Chapter 3. Cabling the storage
subsystem and storage enclosure . . . 31
Cabling the DS3500 storage subsystem .....31
Controller connectors (with Fibre Channel host
port adapters) ............31
Controller connectors (with 1 Gbps iSCSI host
port adapters) ............31
Controller connectors (with 10 Gbps iSCSI host
port adapters) ............32
Controller connectors (with SAS host port
adapters) ..............33
Enclosure ID settings ..........33
Working with SAS cables .........33
Working with SFP modules and fiber optic cables 35
Cabling the EXP3500 storage enclosure ....45
Connecting storage enclosures to the DS3500 . . 48
Upgrading a single-controller to a dual-controller
when there is no attached EXP3500 enclosure . . 55
Upgrading a single-controller to a dual-controller
when there is one or more EXP3500 enclosures
attached to the storage subsystem ......55
Connecting secondary interface cables ....55
Configuring the storage subsystem .....56
Overview of installing an IBM BladeCenter
configuration to connect to a DS3500 .....75
Cabling the DS3500 and EXP3500 ac power supplies 77
Cabling the DS3500 and EXP3500 dc power supplies 78
Chapter 4. Operating the storage
subsystem and storage enclosure . . . 81
Performing the health check process ......81
Hardware inspection ...........82
Turning on the storage subsystem .......82
Installing the Storage Manager Client......85
Monitoring status through software ......85
Firmware updates ...........86
Troubleshooting the storage subsystem ....87
Checking the LEDs ............88
AC power-supply LEDs .........88
DC power-supply LEDs .........88
Front LEDs .............89
Controller LEDs ............90
Seven-segment numeric display LEDs ....93
ESM LEDs..............94
Turning off the storage subsystem .......95
Performing an emergency shutdown .....98
Restoring power after an unexpected shutdown 98
Recovering from an overheated power supply . . . 99
Cache memory and cache battery.......101
Cache memory ............101
Controller cache battery .........102
Cache battery learn cycle ........102
Chapter 5. Replacing components . . 105
OK to remove LED ...........105
Working with controllers .........105
Removing a controller .........106
Removing and installing a cover ......107
Installing a controller..........107
Replacing a controller .........109
Removing and disposing of the system-board
lithium battery ............114
© Copyright IBM Corp. 2010, 2013 iii

Installing an optional host port adapter or
replacing a failed host port adapter ......116
Working with hot-swap drives .......121
Removing a hard disk drive .......122
Installing a hard disk drive........124
Replacing a hot-swap drive........126
Replacing multiple drives ........126
Replacing an ac power supply........132
Replacing a dc power supply ........137
Replacing a power-fan controller in the DS3500
controller-drive enclosure .........142
Replacing a battery ...........148
Replacing the memory cache DIMM......150
Removing the DIMM..........151
Installing the DIMM ..........152
Turning on the storage subsystem after
replacing components .........153
Replacing an SFP transceiver in the DS3500
storage subsystem controller enclosure
configuration ............154
Replacing the bezels ...........156
Removing the bezels ..........156
Installing the bezels ..........157
Working with environmental service modules . . 157
Installing an additional ESM .......157
Replacing an ESM ...........158
Replacing a midplane assembly .......159
Chapter 6. Solving problems .....161
Solving problems in the DS3500 storage subsystem 161
Solving problems in the EXP3500 storage enclosure 167
Seven-segment display sequence codes and their
causes ................169
Chapter 7. Parts listing, DS3500
storage subsystem and EXP3500
storage enclosure .........175
Replaceable components..........175
DS3512 storage subsystem and EXP3512 storage
enclosure parts listing ..........175
DS3524 storage subsystem and EXP3524 storage
enclosure parts listing ..........177
Power cords ..............179
Determining basic information of drive FRUs . . 181
Appendix A. Records ........183
Identification numbers ..........183
Hard disk drive locations .........183
Storage subsystem and controller information
record ................184
Appendix B. Getting help and
technical assistance ........187
Before you call .............187
Using the documentation .........188
Getting help and information from the World Wide
Web................188
Software service and support ........188
Hardware service and support .......188
Taiwan contact information.........189
Notices ..............191
Trademarks ..............192
Important notes ............193
Particulate contamination .........193
Documentation format ..........194
Electronic emission notices .........194
Federal Communications Commission statement 194
Industry Canada compliance statement....195
Australia and New Zealand Class A Statement 195
European Union Electromagnetic Compatibility
Directive ..............195
Germany Electromagnetic compatibility
directive ..............196
Japan Voluntary Control Council for Interference
(VCCI) Class A Statement ........197
Japan Electronics and Information Technology
Industries Association (JEITA) Statement (less
than or equal to 20 A per phase) ......197
Korean Communications Commission (KCC)
Class A Statement ...........197
Russia Electromagnetic Interference (EMI) Class
A Statement .............197
People's Republic of China Class A Electronic
Emission statement ..........198
Taiwan Class A compliance statement ....198
Index ...............199
iv IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

Figures
1. Serial number label, and product name,
machine type, and model number label
locations ..............2
2. DS3512 storage subsystem and EXP3512
storage enclosure hot-swap drive bays and
bezels ..............10
3. DS3524 storage subsystem and EXP3524
storage enclosure hot-swap drive bays and
bezels ..............10
4. Left-side bezel............11
5. Right-side bezel (DS3512 and EXP3512) 11
6. Bottom shelf (DS3524 and EXP3524) ....11
7. Rear view, single-controller model (shown
without an optional host port adapter) . . . 13
8. Rear view, single ESM model storage enclosure 13
9. AC power supply components ......14
10. DC power supply components ......14
11. DC power supply connector - pin positions 14
12. Battery unit ............15
13. DS3512 storage subsystem and EXP3512
storage enclosure dimensions ......18
14. DS3524 storage subsystem and EXP3524
storage enclosure dimensions ......18
15. Example of cold aisle/hot aisle rack
configuration ............23
16. Dual-controller DS3500 storage subsystem
ports and controllers (with optional Fibre
Channel host port adapter) .......31
17. Dual-controller DS3500 storage subsystem
ports and controllers (with optional iSCSI host
port adapter) ............32
18. Dual-controller DS3500 storage subsystem
ports and controllers (with optional 10 iSCSI
host port adapter) ..........32
19. Dual-controller DS3500 storage subsystem
ports and controllers (with an optional SAS
host port adapter) ..........33
20. Mini-SAS cable ...........34
21. Connecting a mini-SAS cable.......34
22. Removing a mini-SAS cable .......35
23. SFP module and protective cap ......38
24. Installing an SFP module into the host port 38
25. Unlocking the SFP module latch - plastic
variety ..............39
26. Unlocking the SFP module latch - wire variety 39
27. LC-LC Fibre Channel cable .......40
28. Removing fiber optic cable protective caps 41
29. Inserting an LC-LC Fibre Channel cable into
an SFP module ...........41
30. LC-LC Fibre Channel cable lever and latches 42
31. Removing the LC-LC Fibre Channel cable 42
32. LC-SC Fibre Channel cable adapter ....43
33. Removing the LC-SC cable adapter protective
caps ...............44
34. Connecting an LC-LC cable into the LC-SC
cable adapter ............44
35. LC-LC Fibre Channel cable lever and latches 45
36. Removing the LC-LC Fibre Channel cable from
an LC-SC Fibre Channel cable adapter . . . 45
37. ESM connectors ...........45
38. Example of a redundant drive path ....50
39. One single-controller DS3500 and multiple
single-ESM storage enclosures ......51
40. A dual-controller DS3500 and a storage
enclosure .............52
41. A dual-controller DS3500 and two storage
enclosures .............52
42. A dual-controller DS3500 and eight storage
enclosures .............53
43. Ethernet port locations on a dual-controller
DS3500 ..............56
44. Host-agent (in-band) managed storage
subsystems.............57
45. Direct (out-of-band) managed storage
subsystems.............58
46. Single-controller direct-attached SAS
connection to a single-host HBA .....60
47. Single-controller direct-attached SAS
connection to dual HBAs in a single-host
(redundant host connection) .......60
48. Single-controller direct-attached SAS
connection to single HBAs in multiple hosts . 61
49. Dual-controller direct-attached SAS connection
to two HBAs in the same host (redundant host
connection) ............61
50. Dual-controller direct-attached SAS
connections to multiple HBAs in multiple
hosts ...............62
51. Dual-controller DS3500 or single-controller
DS3500 SAS connection to multiple hosts using
one SAS switch ...........62
52. Dual-controller DS3500 SAS connection to
multiple hosts using two separate SAS
switches..............63
53. Multiple dual-controller DS3500s SAS
connection to multiple hosts using two using
two separate SAS switches .......63
54. Dual-controller DS3500 SAS connection to
multiple hosts using two SAS switches that are
connected together via an interlink switch . . 64
55. Location of host connectors on storage
controllers .............65
56. Single-controller direct-attached Fibre Channel
connection to a single host HBA .....65
57. Single-controller direct-attached Fibre Channel
connection to dual HBAs (redundant host
connection) ............66
58. Single-controller direct-attached Fibre Channel
connection to single HBAs in multiple hosts . 67
59. Dual-controller direct-attached Fibre Channel
connection to two HBAs in the same host
(redundant host connection) .......67
© Copyright IBM Corp. 2010, 2013 v

60. Dual-controller direct-attached Fibre Channel
connections to multiple HBAs in multiple
hosts ...............68
61. Example of a single Fibre Channel SAN fabric
configuration ............69
62. Example of a dual Fibre Channel SAN fabric
configuration ............69
63. Example of two storage subsystems in a dual
Fibre Channel SAN environment .....70
64. Single-host, single-controller iSCSI
configuration ............71
65. Multiple-port, single-controller iSCSI
configuration ............72
66. Multiple single-port hosts, single-controller
iSCSI configuration ..........72
67. Multiple-host, multiple-port, single-controller,
and redundant-path iSCSI configuration . . . 73
68. Multiple-host, multiple-port,
multiple-storage-subsystem iSCSI configuration 73
69. Single-host, multiple-port, dual-controller
iSCSI configuration ..........74
70. Multiple-host, multiple-port, dual-controller
iSCSI configuration ..........74
71. Example of a multiple-host, multiple-port, and
multiple-fabric (Fibre Channel or iSCSI, and
SAS) configuration ..........75
72. Example of a DS3500 that is connected to a
BladeCenter unit ...........77
73. DC power connector - pin positions ....79
74. DC wiring from DS3500 to disconnect device
and dc power source .........79
75. Power-supply switches and connectors for
DS3500 ac models ..........84
76. Power-supply switches and connectors for
DS3500 dc models ..........84
77. AC power-supply LEDs ........88
78. DC power-supply LEDs ........89
79. DS3512 storage subsystem and EXP3512
storage enclosure front LEDs and controls . . 89
80. DS3524 storage subsystem and EXP3524
storage enclosure front LEDs.......90
81. Controller LEDs ...........91
82. iSCSI host port adapter LEDs ......92
83. Fibre Channel host port adapter LEDs . . . 92
84. SAS host port adapter LEDs .......93
85. 10 Gbps iSCSI port LEDs ........93
86. Numeric display LEDs .........94
87. ESM LEDs .............95
88. Removing a controller ........106
89. Removing the cover .........107
90. Installing a controller .........109
91. Removing and replacing a controller ....111
92. Removing the battery unit from the controller 112
93. Cache backup flash memory device ....113
94. Sequence of removing controller components 117
95. Removing a controller.........118
96. Removing the host port adapter filler panel 119
97. Installing a host port adapter ......120
98. DS3512 storage subsystem and EXP3512
storage enclosure drive LEDs ......122
99. DS3524 storage subsystem and EXP3524
storage enclosure drive LEDs ......122
100. Removing a drive from a DS3512 or EXP3512 123
101. Removing a drive from a DS3524 or EXP3524 124
102. Installing a drive in a DS3512 or EXP3512 125
103. Installing a drive in a DS3524 or EXP3524 125
104. Replacing a power supply .......136
105. Replacing a power supply .......141
106. AC power-supply LEDs ........143
107. Power-supply switches and connectors for
DS3500 AC models .........143
108. Replacing a power supply .......144
109. DC power-supply LEDs ........145
110. DC power connectors for DS3500 DC models 146
111. Power-supply switches and connectors for
DS3500 dc models ..........146
112. Replacing a power supply .......147
113. Removing a controller ........149
114. Removing a battery unit from the controller 149
115. Memory cache DIMM location ......151
116. Removing a controller ........151
117. Removing the DIMM from the controller 152
118. Installing the DIMM in the controller 152
119. DS3524 storage subsystem and EXP3524
storage enclosure front LEDs ......153
120. Controller LEDs...........155
121. Installing an SFP module into the host port 155
122. Removing the bezels .........156
123. Removing an environmental service module 158
124. Replacing the midplane assembly in a DS3512
or EXP3512 ............159
125. Replacing the midplane assembly in a DS3524
or EXP3524 ............160
126. Seven-segment alphanumeric characters 169
127. DS3512 storage subsystem and EXP3512
storage enclosure storage subsystem parts . . 176
128. DS3524 storage subsystem and EXP3524
storage enclosure parts ........178
129. An IBM hologram label example .....182
130. Serial number location on the DS3500 183
vi IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

Tables
1. Features and operating specifications ....5
2. DS3500 storage subsystem models and optional
devices ..............6
3. DC power supply connector - pin descriptions 15
4. DS3512 storage subsystem and EXP3512
storage enclosure weights ........18
5. DS3524 storage subsystem and EXP3524
storage enclosure weights ........19
6. DS3500 component weights .......19
7. Temperature and humidity requirements for
storage subsystems in an Information
Technology (IT) or office environment....20
8. Temperature and humidity requirements for
storage subsystems in a NEBS/ETSI compliant
environment ............20
9. DS3500 ac power requirements ......21
10. DS3500 dc power requirements ......21
11. Maximum number of EXP3512 and EXP3524
storage enclosures with controller firmware
level 7.77.xx.xx and later ........48
12. Maximum number of EXP3512 and EXP3524
storage enclosures with controller firmware
level 7.75.xx.xx and earlier .......49
13. DC power supply connector - pin descriptions 79
14. DC power source wiring descriptions ....80
15. Fibre Channel port LEDs ........92
16. Troubleshooting...........162
17. Troubleshooting information ......167
18. Seven-segment display sequence code
definitions ............170
19. Repeating sequences on the seven-segment
display and corresponding errors .....171
20. Controller numeric display diagnostic codes 172
21. ESM numeric display diagnostic codes 173
22. Parts listing for the DS3512 storage subsystem
and EXP3512 storage enclosure storage
subsystem ............176
23. Parts listing for the DS3524 storage subsystem
and EXP3524 storage enclosure storage
subsystem ............178
24. IBM power cords ..........180
25. Product identification record ......183
26. Drive location information record .....184
27. Storage subsystem and controller information
record ..............184
28. Sample information record .......185
29. Limits for particulates and gases .....194
© Copyright IBM Corp. 2010, 2013 vii

viii IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

Safety
Before installing this product, read the Safety Information.
Antes de instalar este produto, leia as Informações de Segurança.
Læs sikkerhedsforskrifterne, før du installerer dette produkt.
Lees voordat u dit product installeert eerst de veiligheidsvoorschriften.
Ennen kuin asennat tämän tuotteen, lue turvaohjeet kohdasta Safety Information.
Avant d'installer ce produit, lisez les consignes de sécurité.
Vor der Installation dieses Produkts die Sicherheitshinweise lesen.
Prima di installare questo prodotto, leggere le Informazioni sulla Sicurezza.
© Copyright IBM Corp. 2010, 2013 ix

Les sikkerhetsinformasjonen (Safety Information) før du installerer dette produktet.
Antes de instalar este produto, leia as Informações sobre Segurança.
Antes de instalar este producto, lea la información de seguridad.
Läs säkerhetsinformationen innan du installerar den här produkten.
Safety statements
These statements provide the caution and danger information used in this
documentation.
Important:
Each caution and danger statement in this documentation is labeled with a
number. This number is used to cross reference an English-language caution or
danger statement with translated versions of the caution or danger statement in
the Safety Information document.
For example, if a caution statement is labeled “Statement 1,” translations for that
caution statement are in the Safety Information document under “Statement 1.”
Be sure to read all caution and danger statements in this documentation before you
perform the procedures. Read any additional safety information that comes with
your system or optional device before you install the device.
Statement 1
xIBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

DANGER
Electrical current from power, telephone, and communication cables is
hazardous.
To avoid a shock hazard:
vDo not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical storm.
vConnect all power cords to a properly wired and grounded electrical outlet.
vConnect to properly wired outlets any equipment that will be attached to
this product.
vWhen possible, use one hand only to connect or disconnect signal cables.
vNever turn on any equipment when there is evidence of fire, water, or
structural damage.
vDisconnect the attached power cords, telecommunications systems,
networks, and modems before you open the device covers, unless
instructed otherwise in the installation and configuration procedures.
vConnect and disconnect cables as described in the following table when
installing, moving, or opening covers on this product or attached devices.
To Connect: To Disconnect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlet.
5. Turn device ON.
1. Turn everything OFF.
2. First, remove power cords from outlet.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
Statement 2
CAUTION:
When replacing the lithium battery, use only IBM®Part Number 33F8354 or an
equivalent type battery recommended by the manufacturer. If your system has a
module containing a lithium battery, replace it only with the same module type
made by the same manufacturer. The battery contains lithium and can explode if
not properly used, handled, or disposed of.
Do not:
vThrow or immerse into water
vHeat to more than 100°C (212°F)
vRepair or disassemble
Dispose of the battery as required by local ordinances or regulations.
Safety xi

Statement 3
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or
transmitters) are installed, note the following:
vDo not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable parts
inside the device.
vUse of controls or adjustments or performance of procedures other than those
specified herein might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser diode.
Note the following.
Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
Appareil A Laser de Classe 1
`
Statement 4
≥18 kg (39.7 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb)
CAUTION:
Use safe practices when lifting.
xii IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

Statement 5
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current from
the device, ensure that all power cords are disconnected from the power source.
Statement 8
CAUTION:
Never remove the cover on a power supply or any part that has the following
label attached.
Hazardous voltage, current, and energy levels are present inside any component
that has this label attached. There are no serviceable parts inside these
components. If you suspect a problem with one of these parts, contact a service
technician.
Statement 11
Safety xiii

CAUTION:
The following label indicates sharp edges, corners, or joints nearby.
Statement 12
CAUTION:
The following label indicates a hot surface nearby.
Statement 13
DANGER
Overloading a branch circuit is potentially a fire hazard and a shock hazard
under certain conditions. To avoid these hazards, ensure that your system
electrical requirements do not exceed branch circuit protection requirements.
Refer to the information that is provided with your device for electrical
specifications.
Statement 15
CAUTION:
Ensure that the rack is secured properly to avoid tipping when the server unit is
extended.
Statement 17
xiv IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

CAUTION:
The following label indicates moving parts nearby.
Statement 26
CAUTION:
Do not place any object on top of rack-mounted devices.
Statement 29
CAUTION:
This equipment is designed to permit the connection of the earthed conductor of
the dc supply circuit to the earthing conductor at the equipment. If this
connection is made, all of the following conditions must be met:
vThis equipment shall be connected directly to the dc supply system earthing
electrode conductor or to a bonding jumper from an earthing terminal bar or
bus to which the dc supply system earthing electrode conductor is connected.
vThis equipment shall be located in the same immediate area (such as, adjacent
cabinets) as any other equipment that has a connection between the earthed
conductor of the same dc supply circuit and the earthing conductor, and also
the point of earthing of the dc system. The dc system shall not be earthed
elsewhere.
vThe dc supply source shall be located within the same premises as this
equipment.
vSwitching or disconnecting devices shall not be in the earthed circuit
conductor between the dc source and the point of connection of the earthing
electrode conductor.
Statement 34
Safety xv

CAUTION:
To reduce the risk of electric shock or energy hazards:
vThis equipment must be installed by trained service personnel in a
restricted-access location, as defined by the NEC and IEC 60950-1, First
Edition, The Standard for Safety of Information Technology Equipment.
vConnect the equipment to a reliably grounded safety extra low voltage (SELV)
source. An SELV source is a secondary circuit that is designed so that normal
and single fault conditions do not cause the voltages to exceed a safe level (60
V direct current).
vIncorporate a readily available approved and rated disconnect device in the
field wiring.
vSee the specifications in the product documentation for the required
circuit-breaker rating for branch circuit overcurrent protection.
vUse copper wire conductors only. See the specifications in the product
documentation for the required wire size.
vSee the specifications in the product documentation for the required torque
values for the wiring-terminal nuts.
Statement 37
DANGER
When you populate a rack cabinet, adhere to the following guidelines:
vAlways lower the leveling pads on the rack cabinet.
vAlways install the stabilizer brackets on the rack cabinet.
vAlways install the heaviest devices in the bottom of the rack cabinet.
vDo not extend multiple devices from the rack cabinet simultaneously,
unless the rack-mounting instructions direct you to do so. Multiple devices
extended into the service position can cause your rack cabinet to tip.
vIf you are not using the IBM 9308 rack cabinet, securely anchor the rack
cabinet to ensure its stability.
Attention: This product is suitable for use on an IT power distribution system
whose maximum phase to phase voltage is 240 V under any distribution fault
condition.
Power and cabling information for NEBS (Network
Equipment-Building System) GR-1089-CORE
The following comments apply to IBM storage devices that have been designated
as conforming to NEBS (Network Equipment-Building System) GR-1089-CORE.
The equipment is suitable for installation at:
vNetwork telecommunications facilities
vLocations where the NEC (National Electrical Code) applies.
xvi IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

CAUTION:
Intra-building wiring (cabling) must be shielded and grounded at each end
when used with the storage device.
Note:
vThe intra-building ports of this equipment are suitable for connection to
intra-building or unexposed wiring or cabling only. The intra-building ports of
this equipment must not be metallically connected to the interfaces that connect
to the OSP (outside plant) or its wiring. These interfaces are designed for use as
intra-building interfaces only (Type 2 or Type 4 ports as described in
GR-1089-CORE, issue 5 or latest revision) and require isolation from the exposed
OSP cabling. The addition of primary protectors is not sufficient protection to
connect these interfaces metallically to OSP wiring.
vThe ac-powered system does not require the use of an external surge protection
device (SPD).
vThe dc-powered system employs an isolated DC return (DC-I) design. The DC
battery return terminal shall not be connected to the chassis or frame ground.
vThe storage device (dc power) is intended to be installed in a Common Bonding
Network (or mesh network) as described in GR-1089-CORE, Issue 5 or latest
revision.
Safety xvii

xviii IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide

Chapter 1. Introduction
This section contains information about the operating specifications, features, and
components of the IBM System Storage DS3500 storage subsystem and the IBM
System Storage EXP3500 storage enclosure.
Note: For Ethernet Interfaces: DS3500 storage subsystem is not intended to be
connected directly or indirectly by any means whatsoever to interfaces of public
telecommunication networks.
The DS3500 storage subsystem and EXP3500 storage enclosure consist of the
following models:
vDS3512 storage subsystem
vDS3524 storage subsystem
vEXP3512 storage enclosure
vEXP3524 storage enclosure
This section also includes an inventory checklist and information about best
practices and product updates for your DS3500 storage subsystem and EXP3500
storage enclosure.
If firmware and documentation updates are available, you can download them
from the IBM Web site. The DS3500 storage subsystem and EXP3500 storage
enclosure might have features that are not described in the documents that are
shipped with the device. Documents might be updated occasionally to include
information about those features, or technical updates might be available, which
are not included in the DS3500 storage subsystem and EXP3500 storage enclosure
documents.
To check for updates, complete the following steps:
1. Go to http://www.ibm.com/servers/storage/support/.
2. On the “Support for System Storage®and TotalStorage products” page, under
Select your product,intheProduct family field, select Disk systems.
3. In the Product field, select DS3500 or EXP3500.
4. Click Go.
5. Select the following options:
vFor firmware updates, click the Download tab.
vFor documentation updates, click the Install and use tab.
Note: Changes are made periodically to the IBM Web site. Procedures for locating
firmware and documentation might vary slightly from what is described in this
document.
The DS3500 storage subsystem and EXP3500 storage enclosure have limited
warranty. For more information about the terms of warranty, see the Warranty
Information document that comes with the device.
Record information about the DS3500 storage subsystem and EXP3500 storage
enclosure in “Storage subsystem and controller information record” on page 184.
You will need this information if you have to call for service.
© Copyright IBM Corp. 2010, 2013 1

Figure 1 shows the location of the serial number label, product name, machine
type, model, and serial number label.
Note: The illustrations in this document might differ slightly from your hardware.
Use “Hard disk drive locations” on page 183 to keep a record of the drives that are
installed in or attached to the DS3500 storage subsystem and EXP3500 storage
enclosure. This information can be helpful when you install additional drives or if
you have to report a hardware problem. Make a copy of this table before you
record information in it, in case you need extra space to write new values later, or
when you update the DS3500 storage subsystem and EXP3500 storage enclosure
configuration.
What's new in this release
This topic lists the new features available in the current release.
Steps for a few procedures have been added at the following locations:
vReplacing an SFP Transceiver
vReplacing a power-fan controller in the DS3500 controller enclosure
vTurning on the storage subsystem after replacing components
DS3500 storage subsystem overview
An overview of the DS3500 storage subsystem is provided here.
With direct-attached Serial Attached SCSI (SAS) connectivity and support for RAID
levels 0, 1, 3, 5, and 6, the DS3500 storage subsystem provides an internal physical
storage capacity that is scalable up to 36 TB (terabytes) for the DS3512 and 24 TB
for the DS3524 storage subsystem.
Note: RAID 6 implements a P+Q design. If RAID level 1 is implemented and the
number of drives increases to more than 2, RAID level 10 gets implemented
automatically.
Serial number label
Product name Machine type, model, and
serial number label
Figure 1. Serial number label, and product name, machine type, and model number label
locations
2IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide