IBM System Storage DCS3700 Installation, User's, And Maintenance Manual
IBM Sys te m Sto rage DCS3700
Installation, User, and Maintenance Guide
IBM Sys te m Sto rage DCS3700
Installation, User, and Maintenance Guide
Note:
Before using this information and the product it supports, be sure to read the general information in the “Safety” on page
xi and “Notices” on page 159 sections.
First Edition (May 2011)
Printed in the U.S.A.
© Copyright IBM Corporation 2011.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Contents
Figures ..............vii
Tables ...............ix
Safety ...............xi
About this document ........xvii
Who should read this document .......xvii
How this document is organized.......xvii
Getting information, help, and service .....xvii
Before you call ...........xviii
Using the documentation ........xviii
Finding Storage Manager software, controller
firmware, and README files.......xviii
IBM System Storage Productivity Center . . . xviii
Essential Web sites for DCS3700 support
information .............xix
Software service and support .......xix
Hardware service and support .......xix
Fire suppression systems ........xix
Chapter 1. Introduction ........1
Overview ...............1
SAS defined ..............1
Fibre Channel defined ..........2
Operating system support .........2
DCS3700 Features.............3
Inventory checklist ............4
Receiving product updates and support
notifications .............5
Best practices guidelines .........5
DCS3700 components ...........6
Drive drawers .............7
Disk Drive Modules (DDMs) ........8
Controllers ..............9
Controller cable connections .......9
Host ports .............10
Expansion ports ...........10
Ethernet management ports .......10
Serial port .............11
Cache memory ...........11
Cache battery backup module ......11
Environmental Service Modules (ESMs) ....11
Enclosure ID ............12
Power supplies ............13
Fan assemblies ............13
Small Form-Factor Pluggable (SFP) modules . . 15
Software and hardware compatibility and upgrades 15
Software and firmware support code upgrades 15
Determining firmware levels .......16
Specifications ..............17
Area requirements ...........17
Dimensions ............17
Weight ..............17
Shipping dimensions .........18
Environmental requirements and specifications 18
Temperature and humidity .......18
Altitude .............19
Airflow and heat dissipation ......19
Shock and vibration requirements .....19
Acoustic noise ...........20
Electrical requirements .........20
Power and site wiring requirements for
models with power supply and fan units . . 21
Heat output, airflow, and cooling ......21
Chapter 2. Installing the DCS3700 . . . 23
Installation overview ...........23
Ordering the lift tool ..........23
World trade locations .........23
United States locations ........24
Installation sequence ..........24
Handling static-sensitive devices .......25
Preparing for installation ..........26
Unpacking the shipping box........26
Inventory list ............28
Tools ..............29
Tools and hardware required .......29
Preparing the site ...........29
Preparing the rack ...........30
Installing the support rails .........30
Installing and removing the handles ......34
Installing the handles ..........34
Removing the handles..........35
Installing the DCS3700 into a rack .......35
Installing the drives ...........37
Chapter 3. Cabling the DCS3700....41
Cabling the DCS3700 Storage System ......41
Controller connectors (with SAS host port
adapters) ..............41
Controller connectors (with Fibre channel host
port adapters) ............42
Enclosure ID Settings ...........42
Working with SAS cables ..........42
Installing SFP modules ..........44
Removing SFP modules ..........46
Handling fibre-optic cables .........47
Using LC-LC Fibre Channel cables ......48
Connecting an LC-LC cable to an SFP module. . 49
Removing an LC-LC Fibre Channel cable . . . 50
Cabling the DCS3700 expansion enclosure ....51
ESM connectors ............51
Connecting the DCS3700 expansion enclosure . . 51
Redundant drive channel pair .......55
Connecting secondary interface cables ....55
Configuring the storage subsystem .....55
Storage subsystem management methods . . 55
Installing the storage subsystem configuration 57
© Copyright IBM Corp. 2011 iii
Connecting SAS hosts to the DCS3700 . . . 57
Overview of installing an IBM BladeCenter
configuration to connect to a DCS3700 .....59
Installing the BladeCenter configuration ....59
Connecting BladeCenter hosts to the DCS3700 . . 60
Connecting Fibre Channel hosts to the DCS3700 60
Direct-attached dual-controller connections:. . 61
SAN fabric dual-controller, redundent
connections ............63
Cabling the power supply .........65
Relocating the DCS3700 ..........65
Chapter 4. Operating the DCS3700
storage system and expansion
enclosure .............67
Performing the DCS3700 Health Check process . . 67
Hardware inspection ...........68
Powering on the DCS3700 .........68
Installing the Storage Manager Client......70
Monitoring status through software ......71
Firmware updates ...........72
Troubleshooting the storage subsystem ....72
Checking the LEDs ............73
Front LEDs .............73
Controller LEDs ............74
ESM LEDs..............76
Fan assembly LEDs...........76
AC power-supply LEDs .........77
Drive drawer LEDs...........78
Disk drive LEDs............78
Seven-segment numeric display LEDs ....79
Cache memory and cache battery .......81
Cache memory ............82
Controller cache battery .........82
Cache battery learn cycle .........82
Turning off the storage subsystem .......83
Performing an emergency shutdown ......85
Restoring power after an unexpected shutdown . . 85
Recovering from an overheated power supply. . . 86
Chapter 5. Replacing components . . . 89
Replacing components...........89
Service Action Allowed LED.........89
Working with controllers ..........89
Removing a controller ...........90
Removing and installing a cover .......91
Replacing a controller ...........91
Removing and disposing of the system-board
lithium battery .............95
Installing an optional host interface adapter . . . 96
Removing an optional host interface adapter . . . 99
Working with hot-swap DDMs .......100
Installing hot-swap hard disk drives.....101
Replacing hot-swap hard disk drives ....103
Replacing multiple DDMs ........104
Replacing all DDMs at the same time . . . 105
Replacing the drives one at a time ....107
Replacing an ac power supply........109
Replacing a battery ...........113
Replacing the memory cache DIMM......115
Removing the DIMM ...........116
Installing the DIMM ...........117
Removing and replacing the cache backup flash
memory device .............117
Replacing the bezel ...........118
Working with environmental service modules . . 119
Replacing an ESM ............119
Replacing a fan assembly .........120
Replacing a drive drawer .........122
Chapter 6. Hardware maintenance . . 129
General checkout ............129
Solving problems ............129
Troubleshooting problems in the DCS3700
storage subsystem ...........130
Parts listing ..............136
Appendix A. Records ........139
Identification numbers ..........139
Storage subsystem and controller information
record ................140
Sample information record ........141
Installed device records ..........142
Appendix B. Rack mounting template 143
Appendix C. Specifications for
non-IBM rack installation ......147
General safety requirements for IBM products
installed in a non-IBM rack or cabinet .....147
Rack specifications ...........149
Appendix D. Power cords ......153
Appendix E. Component weights . . . 157
Notices ..............159
Trademarks ..............160
Important notes ............160
Particulate contamination .........161
Documentation format ..........162
Electronic emission notices .........162
Federal Communications Commission (FCC)
Class A Statement ...........162
Industry Canada Class A Emission Compliance
Statement .............162
Avis de conformité à la réglementation
d'Industrie Canada ..........162
Australia and New Zealand Class A Statement 162
United Kingdom telecommunications safety
requirement .............163
European Union EMC Directive Conformance
Statement .............163
Germany Electromagnetic Compatibility
Directive ..............163
Japan VCCI Council Class A Statement ....164
Japan Electronics and Information Technology
Industries Association (JEITA) Statement . . . 164
iv IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Korea Communications Commission (KCC)
Class A Statement ...........164
People's Republic of China Class A Electronic
Emission Statement ..........165
Russia Electromagnetic Interference (EMI) Class
A Statement .............165
Taiwan Class A Electronic Emission Statement 165
Taiwan Contact Information ......165
Glossary .............167
Index ...............177
Contents v
vi IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Figures
1. Isometric view of the DCS3700 ......7
2. DCS3700 hot-swap drive drawers .....8
3. DCS3700 drive drawer .........8
4. Location of the DCS3700 controllers .....9
5. DCS3700 connectors..........10
6. Cache battery and memory cache DIMM
locations .............11
7. ESM SAS port locations........12
8. Location of seven-segment numeric display on
ESM...............13
9. Power supply components .......13
10. Fan assembly components .......14
11. Storage expansion enclosure airflow ....14
12. SFP module and fibre optic cable .....15
13. DCS3700 airflow ...........19
14. Example of cold aisle/hot aisle rack
configuration ............22
15. Front rack mounting template ......31
16. Rear rack mounting template ......32
17. DCS3700 drive drawer with labeled disk
drives ..............38
18. Dual-controller DS3700 storage subsystem
ports and controllers (with an optional SAS
host port adapter) ..........41
19. Dual-controller DS3700 storage subsystem
ports and controllers (with an optional Fibre
Channel host port adapter) .......42
20. Mini-SAS cable ...........43
21. Connecting a mini-SAS cable.......43
22. Removing a mini-SAS cable .......44
23. SFP module and protective cap ......45
24. Installing an SFP module into the host port 46
25. Unlocking the SFP module latch - plastic
variety ..............46
26. Unlocking the SFP module latch - wire variety 47
27. Recommended bending and looping
specifications for fibre-optic cables .....48
28. LC-LC Fibre Channel cable .......48
29. Removing fibre-optic cable protective caps 49
30. Inserting an LC-LC Fibre Channel cable into
an SFP module ...........50
31. LC-LC Fibre Channel cable lever and latches 50
32. Removing the LC-LC Fibre Channel cable 51
33. ESM connectors ...........51
34. Single Expansion Enclosures .......53
35. Dual Expansion Enclosures .......54
36. Host-agent (in-band) management .....56
37. Direct (out-of-band) management method 57
38. Dual-controller direct-attached Fibre Channel
connection to two HBAs in the same host
(redundant host connection) .......58
39. Dual-controller direct-attached Fibre Channel
connections to multiple HBAs in multiple
hosts ...............59
40. Example of DCS3700 connected to a single
BladeCenter unit ...........60
41. Dual-controller direct-attached Fibre Channel
connection to two HBAs in the same host
(redundant host connection) .......62
42. Dual-controller direct-attached Fibre Channel
connections to multiple HBAs in multiple
hosts ...............62
43. Example of a single Fibre Channel SAN fabric
configuration ............63
44. Example of a dual Fibre Channel SAN fabric
configuration ............64
45. Example of two storage subsystems in a dual
Fibre Channel SAN environment .....64
46. Example of a multiple-host, multiple-port, and
multiple-fabric (Fibre Channel and SAS)
configuration ............65
47. Power-supply switches and connectors for
DS3500 dc models ..........69
48. DCS3700 front LEDs and controls .....73
49. DS3524 storage subsystem and EXP3524
storage enclosure front LEDs.......73
50. Controller LEDs ...........74
51. Fibre Channel host port adapter LEDs . . . 75
52. SAS host port adapter LEDs .......75
53. ESM LEDs .............76
54. Fan assembly LEDs ..........77
55. AC power-supply LEDs ........77
56. Drive drawer LEDs ..........78
57. Disk drive LEDs ...........79
58. Numeric display LEDs .........80
59. Removing a controller .........90
60. Removing the cover..........91
61. Removing and replacing a controller ....93
62. Removing the battery unit from the controller 93
63. Cache backup flash memory device location 94
64. Removing a controller .........97
65. Removing the host port adapter filler panel 98
66. Installing a host port adapter ......98
67. Remove controller from the chassis ....99
68. Opening the drive drawer .......102
69. Raising the drive handle ........102
70. Aligning the drive ..........102
71. Locking the drive in place .......103
72. Replacing a power supply .......112
73. Removing a controller.........114
74. Removing a battery unit from the controller 114
75. Memory cache DIMM location ......115
76. Removing a controller.........116
77. Removing the DIMM from the controller 116
78. Installing the DIMM in the controller 117
79. Cache backup flash memory device ....118
80. Removing the bezel .........119
81. Removing an environmental service module 120
82. Removing a fan assembly .......121
83. Rear view of the storage expansion enclosure
with the right fan assembly removed . . . 123
© Copyright IBM Corp. 2011 vii
84. Vertical mounting bracket that connects to the
midplane .............124
85. Horizontal mounting bracket that connects to
the drive drawer ..........124
86. Drive drawer release lever on the side of the
drive drawer............125
87. Lock-out tumbler located above the drawer
guide ..............126
88. DCS3700 storage subsystem enclosure parts
list ...............137
89. Front rack mounting template ......144
90. Rear rack mounting template ......145
91. Top View of non-IBM Rack Specifications
Dimensions ............149
92. Rack specifications dimensions, top front
view ..............150
93. Rack specifications dimensions, bottom front
view ..............151
viii IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Tables
1. DCS3700 features ...........3
2. Minimum DCS3700 software and firmware
levels ..............15
3. DCS3700 storage expansion enclosure
dimensions.............17
4. DCS3700 weights ..........17
5. DCS3700 component weights ......18
6. DCS3700 shipping carton dimensions ....18
7. Temperature and humidity requirements for
storage expansion enclosure when in storage
or in transit ............18
8. DCS3700 altitude ranges ........19
9. DCS3700 power and heat dissipation ....19
10. Random vibration power spectral density 20
11. DCS3700 sound levels .........20
12. DCS3700 ac power requirements .....20
13. Fibre Channel port LEDs ........75
14. Fan assembly LEDs ..........77
15. Drive drawer LEDs ..........78
16. Disk drive LEDs ...........79
17. Drive state indicated by the LEDs .....79
18. Controller numeric display diagnostic codes 80
19. ESM numeric display diagnostic codes . . . 81
20. Drive LED activity ..........100
21. Troubleshooting...........136
22. Parts listing (DCS3700 storage system and
expansion enclosure) .........137
23. Storage subsystem and controller information
record ..............140
24. Sample information record .......141
25. Hard disk drive record ........142
26. IBM power cords ..........153
27. DCS3700 component weights ......157
28. Limits for particulates and gases .....161
© Copyright IBM Corp. 2011 ix
x IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Safety
The caution and danger statements that this document contains can be referenced in the multilingual
IBM®Safety Information document that is provided with your IBM System Storage®DCS3700 storage
expansion enclosure. Each caution and danger statement is numbered for easy reference to the
corresponding statements in the translated document.
v Danger: These statements indicate situations that can be potentially lethal or extremely hazardous to
you. A danger statement is placed just before the description of a potentially lethal or extremely
hazardous procedure, step, or situation.
v Caution: These statements indicate situations that can be potentially hazardous to you. A caution
statement is placed just before the description of a potentially hazardous procedure step or situation.
v Attention: These notices indicate possible damage to programs, devices, or data. An attention notice is
placed just before the instruction or situation in which damage could occur.
Before installing this product, read the following danger and caution notices.
Statement 1:
DANGER
Electrical current from power, telephone, and communication cables is hazardous.
To avoid a shock hazard:
v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration
of this product during an electrical storm.
v Connect all power cords to a properly wired and grounded electrical outlet.
v Connect to properly wired outlets any equipment that will be attached to this product.
v When possible, use one hand only to connect or disconnect signal cables.
v Never turn on any equipment when there is evidence of fire, water, or structural damage.
v Disconnect the attached power cords, telecommunications systems, networks, and modems before
you open the device covers, unless instructed otherwise in the installation and configuration
procedures.
v Connect 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:
© Copyright IBM Corp. 2011 xi
CAUTION:
When replacing the lithium battery, use only 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:
v Throw or immerse into water
v Heat to more than 100° C (212° F)
v Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
Statement 3:
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fibre optic devices, or transmitters) are
installed, note the following:
v Do 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.
v Use 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 statement
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
Apparell Laser de Calsse 1À
IEC 825-11993 CENELEC EN 60 825
Statement 4:
xii IBM System Storage DCS3700: Installation, User, and Maintenance Guide
≥ 18 kg (39.7 lb) ≥ 32 kg (70.5 lb) ≥ 55 kg (121.2 lb)
CAUTION:
Use safe practices when lifting.
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.
2
1
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.
Safety xiii
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.
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:
v This 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.
v This 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.
v The dc supply source shall be located within the same premises as this equipment.
v Switching 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 30:
CAUTION:
To reduce the risk of electric shock or energy hazards:
v This 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.
v Connect 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).
v The branch circuit overcurrent protection must be rated 20 A.
v Use 12 American Wire Gauge (AWG) or 2.5 mm2 copper conductor only, not exceeding 4.5 meters in
length.
v Incorporate a readily available approved and rated disconnect device in the field wiring.
CAUTION:
This unit has more than one power source. To remove all power from the unit, all dc MAINS must be
disconnected.
xiv IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Cable Warning:
WARNING: Handling the cord on this product or cords associated with accessories sold with this
product, will expose you to lead, a chemical known to the State of California to cause cancer, and birth
defects or other reproductive harm. Wash hands after handling.
Safety xv
xvi IBM System Storage DCS3700: Installation, User, and Maintenance Guide
About this document
This document provides instructions for installing and customizing the configuration of your IBM System
Storage DCS3700 Storage Subsystem and the DCS3700 expansion enclosure. It also provides maintenance
procedures and troubleshooting information.
Who should read this document
This document is intended for system operators and service technicians who have extensive knowledge
of Fibre Channel Serial Attached SCSI (SAS) and network technology.
How this document is organized
Chapter 1, “Introduction,” on page 1 describes the IBM System Storage DCS3700 Storage Subsystem and
the DCS3700 expansion enclosure. This chapter includes an inventory checklist and an overview of the
storage expansion enclosure features, operating specifications, and components.
Chapter 2, “Installing the DCS3700,” on page 23 contains information on how to install the DCS3700.
Chapter 3, “Cabling the DCS3700,” on page 41 contains information on how to cable the DCS3700.
Chapter 4, “Operating the DCS3700 storage system and expansion enclosure,” on page 67 contains
information on how to power on and off the storage expansion enclosure, recover from an overheated
power supply, troubleshoot the storage expansion enclosure, and interpret LEDs.
Chapter 5, “Replacing components,” on page 89 contains step-by-step instructions about how to install or
remove customer replaceable units (FRUs), such as hard disk drives, power supplies, fan assemblies,
environmental service modules (ESMs), drive drawers, and SFP modules.
Chapter 6, “Hardware maintenance,” on page 129 describes problems and symptoms that are specific to
your storage expansion enclosure. It also provides a parts list for the DCS3700.
Appendix A, “Records,” on page 139 provides a table that you can use to record and update important
information about your DCS3700, including serial number and device records. Whenever you add options
to your DCS3700, be sure to update the information in this table.
Appendix B, “Rack mounting template,” on page 143 provides the rack mounting templates for
installation of the DCS3700. If you want to tear out the templates from the document for use during
installation, use these copies of the templates.
Appendix C, “Specifications for non-IBM rack installation,” on page 147 provides safety requirements and
rack specifications for installing DS5000 storage subsystems and DS5000 storage expansion enclosures
into non-IBM racks.
Appendix D, “Power cords,” on page 153 lists power cord information for the DCS3700.
Getting information, help, and service
If you need help, service, or technical assistance or just want more information about IBM products, you
will find a wide variety of sources available from IBM to assist you. This section contains information
about where to go for additional information about IBM and IBM products, what to do if you experience
a problem with your system, and whom to call for service, if it is necessary.
© Copyright IBM Corp. 2011 xvii
Before you call
Before you call, take these steps to try to solve the problem yourself:
v Check all cables to make sure that they are connected.
v Check the power switches to make sure that the system is turned on.
v Use the troubleshooting information in your system documentation, and use the diagnostic tools that
come with your system.
v Check for technical information, hints, tips, and new device drivers at the IBM System Storage Disk
Support Web site pages that are listed in this section.
v Use an IBM discussion forum on the IBM Web site to ask questions.
You can solve many problems without outside assistance by following the troubleshooting procedures
that IBM provides in the DS Storage Manager online help or in the documents that are provided with
your system and software. The information that comes with your system also describes the diagnostic
tests that you can perform. Most subsystems, operating systems, and programs come with information
that contains troubleshooting procedures and explanations of error messages and error codes. If you
suspect a software problem, see the information for the operating system or program.
Using the documentation
Information about your IBM system and preinstalled software, if any, is available in the documents that
come with your system; this includes printed books, online documents, README files, and help files. See
the troubleshooting information in your system documentation for instructions for using the diagnostic
programs. The troubleshooting information or the diagnostic programs might tell you that you need
additional or updated device drivers or other software.
Finding Storage Manager software, controller firmware, and README
files
DS Storage Manager software and controller firmware versions are available on the product DVD and can
also be downloaded from the Web.
Important: Before you install DS Storage Manager software, consult the README. Updated README
files contain the latest device driver versions, firmware levels, limitations, and other
information not found in this document.
Storage Manager README files are found on the Web, at the following address:
http://www.ibm.com/support/entry/portal
To access the documentation related to your storage subsystem, operating system, and DS Storage
Manager version from the IBM Support Portal, complete the following steps:
1. Go to http://www.ibm.com/support/entry/portal.
2. Under Choose your products, click Browse for a product or Search for a product.
3. Under Choose your task, click Documentation.
4. Under See your results, click View your page.
5. In the Product documentation box, click the link for the publication that you want to access.
IBM System Storage Productivity Center
The IBM System Storage Productivity Center (SSPC) is an integrated hardware and software solution that
provides a single point of entry for managing IBM System Storage, IBM System Storage SAN Volume
Controller clusters, and other components of your data storage infrastructure. Therefore, you can use the
IBM System Storage Productivity Center to manage multiple IBM System Storage product configurations
from a single management interface.
xviii IBM System Storage DCS3700: Installation, User, and Maintenance Guide
To learn how to incorporate the DS Storage Manager with the IBM System Storage Productivity Center,
see the IBM System Storage Productivity Center Information Center at the following Web site:
publib.boulder.ibm.com/infocenter/tivihelp/v4r1/index.jsp
Essential Web sites for DCS3700 support information
The most up-to-date information about DCS3700 storage subsystems and DS Storage Manager, including
documentation and the most recent software, firmware, and NVSRAM downloads, can be found at the
following Web site:
1. Go to http://www.ibm.com/support/entry/portal.
2. Under Choose your products, click Browse for a product or Search for a product.
3. Under Choose your task, click Downloads.
4. Under See your results, click View your page.
5. In the Downloads and fixes, click the link for the download that you want to access.
Software service and support
Through IBM Support Line, for a fee you can get telephone assistance with usage, configuration, and
software problems. For information about which products are supported by Support Line in your country
or region, go to the following Web site:
www.ibm.com/services/sl/products
For more information about the IBM Support Line and other IBM services, go to the following Web sites:
v www.ibm.com/services
v www.ibm.com/planetwide
Hardware service and support
You can receive hardware service through IBM Integrated Technology Services or through your IBM
reseller, if your reseller is authorized by IBM to provide warranty service. Go to the following Web site
for support telephone numbers:
www.ibm.com/planetwide
In the U.S. and Canada, hardware service and support is available 24 hours a day, 7 days a week. In the
U.K., these services are available Monday through Friday, from 9 a.m. to 6 p.m.
Fire suppression systems
A fire suppression system is the responsibility of the customer. The customer's own insurance
underwriter, local fire marshal, or a local building inspector, or both, should be consulted in selecting a
fire suppression system that provides the correct level of coverage and protection. IBM designs and
manufactures equipment to internal and external standards that require certain environments for reliable
operation. Because IBM does not test any equipment for compatibility with fire suppression systems, IBM
does not make compatibility claims of any kind nor does IBM provide recommendations on fire
suppression systems.
About this document xix
xx IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Chapter 1. Introduction
This chapter describes the operating specifications, features, and components for the IBM System Storage
DCS3700 storage system and DCS3700 expansion unit.
This chapter also includes an inventory checklist and important information on best practices guidelines
and product updates for your DCS3700.
Overview
The DCS3700 is designed to meet the storage needs of the highly scalable, data streaming applications in
high performance computing environments. The storage subsystem offers you data access and protection
to meet your existing high performance computing storage requirements and prepare for the future.
The DCS3700 is designed to provide solutions to meet the needs of midrange storage requirements,
delivering high performance, advanced function, high availability, modular and scalable storage capacity,
with SAN-attached 6 Gbps Serial Attached SCSI (SAS) and 8 Gbps Fibre Channel (FC) connectivity, and
support for RAID levels 0, 1, 3, 5, and 6.
Note:
1. RAID 6 uses a P+Q design implementation.
2. When RAID level 1 is implemented and the number of drives increases to more than two,
RAID level 10 is automatically implemented.
The DCS3700 Storage Subsystem supports attachment of the DCS3700 expansion enclosure. The DCS3700
supports configurations of SAS and Near-Line SAS disks, or a mix of these types of disk drives. For
details on the maximum number of disk drives supported, maximum storage capacity, and other features
of the storage subsystem, see “DCS3700 Features” on page 3.
The DCS3700 is a 4U rack-mountable storage enclosure that supports up to two redundant, dual-active
RAID storage controllers or environmental service modules, depending on the model. The DCS3700
storage system RAID controllers come standard with two 6 Gbps x4 SAS host interface ports and a single
6 Gbps x4 SAS expansion port on the base controller. In addition, each controller has an additional slot
that supports the installation of an optional Host Interface Card (HIC). The supported host interface cards
are a four-port 8 Gbps Fibre Channel (FC) adapter or a two-port 6 Gbps SAS adapter. Either host
interface card can be used in conjunction with the base SAS host interface; however, each controller must
have the same type of host interface card installed.
Advanced DCS3700 storage management, copy service options, and optional advanced disaster recovery
functions are available, including FlashCopy
Storage Manager client is also available for the DSC3700 Storage Subsystem. This storage management
software is designed to help centralize storage management, help simplify partitioning of the DCS3700
series storage into as many as 128 virtual servers, and strategically allocate storage capacity to maximize
storage space.
®
, VolumeCopy, and Enhanced Remote Mirroring. The DS
SAS defined
The Serial Attached SCSI (SAS) is a point-to-point serial architecture that replaces the parallel SCSI bus
technology but still retains usage of the standard SCSI command set. The SAS point-to-point architecture
provides a dedicated, full-duplex channel, that can transfer data at 6 Gbps in each direction. The Serial
SCSI Protocol (SSP) is used to support SAS-only drives.
© Copyright IBM Corp. 2011 1
Nearline SAS or NL-SAS drives are enterprise SATA drives that offer a native SAS interface. NL-SAS
drives support dual I/O ports allowing for redundant data paths, a faster interface compared to SATA
and the ability to support the SCSI command set.
Fibre Channel defined
Fibre Channel technology is outlined in the SCSI-3 Fibre Channel Protocol (SCSI-FCP) standard. Fibre
channel is a high-speed data transport technology that is used for mass storage and networking.
Using a Fibre Channel arbitrated loop (FC-AL), more than 100 fibre-channel devices can be supported,
compared to 15 small computer system interface (SCSI) devices.
Operating system support
For supported operating systems, see the latest System README file and the IBM DCS3700 product at
the following Web site for additional host operating system support:
www.ibm.com/systems/support/storage/config/ssic/index.jsp
See “Finding Storage Manager software, controller firmware, and README files” on page xviii to learn
how to access the DCS3700 README files on the Web.
2 IBM System Storage DCS3700: Installation, User, and Maintenance Guide
DCS3700 Features
Table 1 summarizes the features of the DCS3700 storage subsystem and expansion enclosure. For a list of
the operating specifications, such as weight, height, and heat output, see “Specifications” on page 17.
Table 1. DCS3700 features
General:
v Modular components
– RAID storage controller
modules
– Environmental services modules
(ESMs)
– Power supplies
– Fan assembly
– High-capacity disk drives
v Technology
– Support for RAID 0, 1, 3, 5 and
6 disk arrays
– Storage capacity up to 360 TB
– Support for up to 180 SAS or
NL-SAS disk drives when using
two additional expansion
enclosures
– Controller cache size of 2 GB
per controller for a total of 4 GB
per storage subsystem
– Cache memory upgradable to 4
GB per controller for a total of 8
GB per storage subsystem
– Support for 6 Gbps SAS host
interface on the controller
– Each controller supports one
host interface adapter. Support
for:
- 6 Gbps SAS
- 8 Gbps FC
– Redundant controllers or ESMs,
power supply and fan
assemblies
– Hot-swap technology for
controllers and power supply
v User interface
– Built-in power, activity, and
fault LEDs, identification
labeling on components, rear
LEDs, and connectors
– Easy-to-replace drives, power
supplies, fan assemblies,
controllers and ESMs
Storage Subsystem:
v RAID controllers
– Host interface: Two 26-pin,
mini-SAS connectors per
controller
– Expansion: One 26 pin,
mini-SAS connector per
controller
– Dual 1Gbps Ethernet
management ports
– Seven segment display
v Power supply:
– Two hot-swap 1755-watt (200 -
240V ac) standard
– Provides redundant power
v Premium Feature Options:
– FlashCopy
– VolumeCopy
– Enhanced Remote Mirroring
Storage expansion enclosure:
v ESM
– Host interface: Two 26-pin,
mini-SAS connectors per
controller
– Expansion: One 26 pin,
mini-SAS connector per
controller
– Single 100Mbps Ethernet debug
port
– Seven segment display
v Power supply:
– Two hot-swap 1755-watt (200 -
240V ac) standard
– Provides redundant power
Chapter 1. Introduction 3
Inventory checklist
The following illustration and inventory list show the items that you need to install the storage expansion
enclosure in the rack cabinet. If any items are missing or damaged, contact your place of purchase.
Notes:
1. The illustration might differ slightly from your hardware.
2. Depending on your DCS3700 order, your shipping box might contain additional materials that are not
shown in the following illustration.
Fan
assembly (2)
Power
supply (2)
Controller
or ESM (2)
Clip nuts (4)
M5 x 8 mm
screws (16)
Handles (4)
Rear brackets
Support rails
Bezel
PDU jumper cord
Disk drive module
(20 or more)
Drive drawer
assembly (5)
After you unpack the DCS3700, verify that you have the following items:
v 4U-high storage enclosure (1)
– Drive drawer assemblies (5)
– Fan assemblies (2)
– Power supplies (2)
– ESMs (2) (for 1818 80E)
Storage
enclosure
dcsq0007
4 IBM System Storage DCS3700: Installation, User, and Maintenance Guide
– Controllers (2) (for 1818 80C)
v Handles (4), packaged in a smaller box inside the shipping box
v DDMs (20 or more, depending on your DCS3700 order), packaged in a smaller box inside the shipping
box
v Bezel (1)
v Rack-mounting hardware kit (1), packaged in a smaller box inside the shipping box, including:
– Rails (2), right and left assembly
– Rear brackets (2)
– M5 black hex-head slotted screws (16)
Note: The screws are either preinstalled in the support rails or packaged in a plastic bag.
– Washers (8)
– Clip nuts (4)
Important: The DCS3700 does not ship with region-specific ac power cords. You must obtain the
IBM-approved power cords for your region. See Appendix D, “Power cords,” on page 153 for
more information.
Receiving product updates and support notifications
Be sure to download the latest versions of the following packages at the time of initial installation and
when product updates become available:
v DS Storage Manager host software
v DCS3700 storage system controller firmware and NVSRAM
v DCS3700 expansion unit ESM firmware
v Drive firmware
Important
Keep your system up-to-date with the latest firmware and other product updates by subscribing to
receive support notifications.
For more information about how to register for support notifications, see the Stay Informed section of
the IBM Disk Support Web site:
Best practices guidelines
To ensure optimal operation of your system, always follow these best practices guidelines:
v Ensure that your system is in an optimal state before you shut it down. Never turn the power off if
any Service Action Required LED is lit; be sure to resolve any error conditions before you shut down
the system.
v Back up the data on your storage drives periodically.
v To maintain power redundancy, plug the DCS3700 right and left power supplies into two independent
external power circuits through distribution units inside a rack cabinet or directly into external
receptacles. This ensures that the DCS3700 storage system and all its attached expansion enclosures
have power in the event that only one power circuit is available. In addition, having all the right or all
the left power cables plugged into the same power circuit enables the storage devices in the
configuration to power on simultaneously during an unattended restoration of power.
Note: Do not overload the circuits that power your storage subsystem and storage expansion
enclosures. Use additional pairs of power distribution units (PDUs) if necessary. Refer to Table 9
on page 19
Chapter 1. Introduction 5
on page 19 for information on storage expansion enclosure power requirements. Contact your
IBM service representative for additional information if needed.
v Before any planned system shutdown or after any system additions, removals, or modifications
(including firmware updates, logical drive creations, storage partitioning definitions, hardware changes,
and so on), complete the following tasks:
1. Save the storage subsystem profile.
2. Save the storage subsystem configuration.
3. Save the Collect All Support Data (CASD).
Make sure that you save the files in a location other than in the logical drives that were created for the
storage subsystem.
For more information on how to complete these tasks, check the DS Storage Manager online help or
the DS Storage Manager guide for your operating system.
v During any maintenance or attended power-up procedure, carefully follow the power-up sequence
listed in “Restoring power after an unexpected shutdown” on page 85. Check that each component of
the subsystem is powered-on in the proper order during this entire power-up procedure to ensure the
controller will be able to optimally access all of your storage subsystems.
v The storage subsystem supports simultaneous power-up to the system components; however, you
should always follow the power-up sequence listed in “Restoring power after an unexpected
shutdown” on page 85 during any attended power-up procedure.
v A storage system in an optimal state should recover automatically from an unexpected shutdown and
unattended simultaneous restoration of power to system components. After power is restored, call IBM
support if any of the following conditions occur:
– The storage subsystem logical drives and subsystems are not displayed in the DS Storage Manager
graphical user interface (GUI).
– The storage subsystem logical drives and subsystems do not come online.
– The storage subsystem logical drives and subsystems seem to be degraded.
DCS3700 components
The DCS3700 storage system directs and manages the I/O activity between a host and the drives in a
RAID array. The DCS3700 expansion unit provides additional storage capacity to the storage system.
Figure 1 on page 7 shows the DCS3700 unit without the front bezel in place.
Note: The illustration in this document might differ slightly from your hardware.
6 IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Figure 1. Isometric view of the DCS3700
The DCS3700 has the following removable components. These components, called field replaceable units
(FRUs), are accessible from the front or back of the enclosure.
v Five drive drawers, including the right and left cable chains.
v 20 minimum to 60 maximum Disk Drive Modules (DDMs)
v Two RAID controllers (for the 1818-80C)
v Two environmental service modules (ESMs) (for the 1818-80E)
v Two power supplies
v Two fan assemblies
The hot-swap features of the DCS3700 enable you to remove and replace DDMs, power supplies, fan
assemblies, ESMs, and Raid controllers without turning off the storage expansion enclosure. You can
maintain the availability of your system while a hot-swap device is removed, installed, or replaced.
The DCS3700 expansion unit is the storage expansion enclosure specifically designed for use with the
DCS3700 storage system. The DCS3700 can support up to two DCS3700 expansion enclosures for a total
of 180 disk drive modules (DDM).
Drive drawers
Both the DCS3700 storage system and DCS3700 expansion enclosure have five removable drive drawers
that are accessible from the front of the enclosure (see Figure 2 on page 8). Each drive drawer can contain
up to 12 disk drives (see Figure 3 on page 8). With the drive drawers fully populated, the DCS3700 can
support up to 60 DDMs.
Note: Drive drawers might be also referred to as drive trays in other publications.
Chapter 1. Introduction 7
1
Drive
drawers
Figure 2. DCS3700 hot-swap drive drawers
Front-row
drives
2
3
4
!
5
dcsq0004
Figure 3. DCS3700 drive drawer
Important: The installation order within each drive drawer is from left to right in rows. Slots 1, 4, 7 and
10 must have a drive installed in these locations to make sure there is sufficient air flow to
the drives (see Figure 3). To verify these slots, consult the overlay on the front of each of the
five drive drawers. Make sure the four drives in each row are adjacent to each other. The long
edge of each drive should touch the drive next to it. To maintain a uniform airflow across all
drive drawers, the storage expansion enclosure must be configured with a minimum of 20
drives, with four drives in the front row of each of the five drive drawers.
Disk Drive Modules (DDMs)
The DSC3700 supports up to 60 DDMs in five drive drawers that are accessible from the front of the
storage expansion enclosure. The disk drawer planar board supports 6 Gbps SAS (Serial Attached SCSI)
and Near-Line SAS drives.
Attention: The DSC3700 DDM and the EXP5060 SATA DDM are not compatible. Do not use the
DSC3700 DDMs in an EXP5060 storage expansion enclosures. Similarly, do not use the EXP5060 SATA
DDM in an DSC3700 enclosure
There are no servicable parts in a DDM FRU. If it fails, it must be replaced in its entirety. When replacing
a DDM FRU, be sure to order and install the correct DDM FRU.
8 IBM System Storage DCS3700: Installation, User, and Maintenance Guide
Loading...