IBM TotalStorage 200 Installation And User Manual
IBM TotalStorage®Network Attached Storage 200
Storage Unit
Installation and User’s Guide
IBM TotalStorage®Network Attached Storage 200
Storage Unit
Installation and User’s Guide
Note
Before using this information and the product it supports, be sure to read the general information in “Appendix B. Notices” on
page 37, product warranty information in “Appendix C. Product warranties” on page 41, and the safety information in
“Appendix D. Safety notices” on page 51.
First Edition (June 2001)
This edition applies to Version 1 Release 1 of the IBM 5194 Network Attached Storage Model EXU Storage Unit.
Order publications through your IBM representative or the IBM branch office servicing your locality. Publications are
not stocked at the address below.
IBM welcomes your comments. A form for reader’s comments is provided at the back of this publication. If the form
has been removed, you may address your comments to:
International Business Machines Corporation
Design & Information Development
Department CGFA
PO Box 12195
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U.S.A.
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When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any
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© Copyright International Business Machines Corporation 2001. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Contents
About this book ........................v
How this book is organized .....................v
Safety precautions ........................vi
Frequently used terms ......................vii
Web sites ...........................vii
Getting help online ......................vii
Other helpful sites .......................vii
Online support .........................vii
Chapter 1. Introduction ......................1
Features at a glance .......................1
Storage unit drive bays ......................1
Hot-swap drive bays ......................2
ESM and power supply bays ...................2
Switch card bay ........................3
Front controls, indicators, and devices.................4
Rear controls, indicators, and connectors................5
Power-supply controls, indicators, and connectors ...........5
ESM board user controls.....................6
System-management software support ................7
Chapter 2. Installing the storage unit ................9
Operating specifications ......................9
Inventory checklist ........................9
Getting started .........................10
Preparing the storage unit .....................10
Removing CRUs .......................10
Setting the interface options and ID settings .............11
Installing the storage unit in a rack .................13
Completing the installation.....................16
Installing identification labels ...................16
Cabling the storage unit ....................17
Turning the storage unit on and off .................17
Turning on the storage unit ...................17
Turning off the storage unit ...................18
Turning off the storage unit in an emergency .............19
Turning on the storage unit after an emergency ............19
Chapter 3. Installing and replacing devices .............21
Working with hot-swap drives ...................21
Replacing hot-swap drives....................22
Working with cards and boards ...................23
Replacing a bridge card ....................23
Replacing the switch card ....................24
Replacing an ESM board ....................25
Working with hot-swap power supply/fan units .............26
Removing a hot-swap power supply/fan unit .............26
Installing a hot-swap power supply/fan unit .............27
Chapter 4. Solving problems ...................29
Troubleshooting ........................29
Getting help, service, and information ................31
Service support........................31
© Copyright IBM Corp. 2001 iii
Before you call for service....................32
Getting customer support and service ...............32
Purchasing additional services ...................34
Appendix A. Records ......................35
Identification numbers ......................35
Installed-device records......................35
Appendix B. Notices ......................37
Product notices .........................37
Electronic emission notices ....................37
Federal Communications Commission (FCC) statement .........37
Industry Canada Class A emission compliance statement ........38
Avis de Conformité aux normes d’Industrie Canada ..........38
Australia and New Zealand Class A statement ............38
United Kingdom telecommunications safety requirement.........38
European Union (EU) conformity statement .............38
EMC directive 89/336/EEC statements ...............39
FCCA (Text für alle in Deutschland vertriebenen EN 55022 Klasse A Geräte.) 39
Taiwan electrical emission statement ................40
Japanese Voluntary Control Council for Interference (VCCI) statement . . . 40
Trademarks ..........................40
Appendix C. Product warranties ..................41
Warranty Statements.......................41
IBM Statement of Limited Warranty for United States, Puerto Rico, and
Canada (Part 1 - General Terms) ................41
IBM Statement of Warranty Worldwide except Canada, Puerto Rico, Turkey,
United States (Part 1 – General Terms) ..............44
Part2-Worldwide Country-Unique Terms ..............46
Appendix D. Safety notices....................51
General safety .........................51
Electrical safety.........................51
Safety inspection guide .....................53
Handling electrostatic discharge-sensitive devices ...........54
Grounding requirements ....................54
Translated safety notices .....................54
Index ............................91
iv 5194 Network Attached Storage Model EXU Installation and User’s Guide
About this book
This book provides instructions for installing and replacing components in your IBM
5194 Network Attached Storage Model EXU. It also provides information on
troubleshooting your storage unit. To set up your storage unit, see “Chapter 2.
Installing the storage unit” on page 9for detailed information.
How this book is organized
Chapter 1. Introduction describes the storage unit. This chapter includes an
overview of the storage unit features and components.
Chapter 2. Installing the storage unit contains the information and instructions
needed to install the storage unit in an Electronic Industries Association (EIA)
standard rack. This chapter also contains operating specifications, an inventory
checklist, option-switch settings, and power-cord routing information. In addition, this
chapter contains instructions for turning the storage unit on and off during normal
and emergency situations.
Chapter 3. Installing and replacing devices contains step-by-step instructions for
installing and removing customer replaceable units (CRUs), such as hard disk
drives, power supplies, and environmental services monitor (ESM) boards.
Chapter 4. Solving problems contains the problem symptoms and error messages
that are specific to your storage unit. This chapter also provides warranty
information and instructions on how to obtain service and technical assistance for
your storage unit.
Appendix A. Records provides a section to record and update important information
about your storage unit, including serial number and device records. Whenever you
add components to your storage unit, be sure to update the information in this
appendix.
Appendix B. Notices contains product notices, trademarks, and acknowledgments.
Appendix D. Safety notices contains important safety information when installing
and operating your storage unit.
Appendix C. Product warranties contains important product warranty information.
© Copyright IBM Corp. 2001 v
Safety precautions
Be sure to read all caution and danger statements in this publication before
performing any of the instructions.
Leia todas as instruções de cuidado e perigo antes de executar qualquer operação.
Prenez connaissance de toutes les consignes de type Attention et Danger avant de
procéder aux opérations décrites par les instructions.
Lesen Sie alle Sicherheitshinweise, bevor Sie eine Anweisung ausführen.
Accertarsi di leggere tutti gli avvisi di attenzione e di pericolo prima di effettuare
qualsiasi operazione.
Lea atentamente todas las declaraciones de precaución y peligro ante de llevar a
cabo cualquier operación.
vi 5194 Network Attached Storage Model EXU Installation and User’s Guide
Frequently used terms
The following list of terms, used within this document, have these specific
meanings:
Term Definition in this document
Drive bay A receptacle into which you insert a hard disk drive in an appliance.
Engine The processor that responds to requests for data from clients. This
Storage unit Hardware that contains one or more drive bays, power supplies,
Notes These notices provide important tips, guidance, or advice.
Attention These notices indicate possible damage to programs, devices, or
Caution These notices indicate situations that can be potentially hazardous
The bays could be physically located in a separate rack from the
appliance.
is where the operating software for the Network Attached Storage
200 appliance resides.
and a network interface. Some storage units contain a RAID
controller. There are no other components in a storage unit, and it
is accessed by a NAS appliance.
data. An attention notice is placed just before the instruction or
situation in which damage could occur.
to you. A caution notice is placed just before descriptions of
potentially hazardous procedure steps or situations.
Danger These notices indicate situations that can be potentially lethal or
Web sites
Getting help online
www.ibm.com/storage/support/nas
Here you can visit a support page that is specific to your hardware, complete with
FAQs, parts information, technical hints and tips, technical publications, and
downloadable files, if applicable.
Other helpful sites
www.ibm.com Main IBM home page
www.ibm.com/storage IBM Storage home page
www.ibm.com/storage/support/nas IBM NAS Support home page
www.ibm.com/storage/nas IBM NAS products
www.tivoli.com Tivoli
www.cdpi.com Columbia Data Products
extremely hazardous to you. A danger notice is placed just before
descriptions of potentially lethal or extremely hazardous procedure
steps or situations.
Online support
Use the following Web site to obtain online support:
www.storage.ibm.com/support/nas
About this book vii
viii 5194 Network Attached Storage Model EXU Installation and User’s Guide
Chapter 1. Introduction
The 5194 Network Attached Storage Model EXU Storage Unit is a compact unit that
provides high-capacity, small computer system interface (SCSI) disk storage. It
supports 14 36.4 GB 10K rpm Ultra160 SCSI drives on a single logical bus. It
delivers fast, high-volume data transfer, retrieval, and storage functions across
multiple drives. The storage unit is designed for continuous, reliable service; the
modular, redundant disk drives, power supplies with built-in fans, and environmental
services monitor (ESM) boards use hot-swap technology for easy replacement
without turning off the engine to which the storage unit is attached, and in some
cases, without turning off the storage unit.
The storage unit supports IBM Ultra160 SCSI for the host and drive interfaces and
is designed for easy installation and integration into a variety of system
environments.
After you review the introductory information provided in this chapter, see
“Chapter 2. Installing the storage unit” on page 9 to begin the installation process.
Features at a glance
The following table summarizes the features of the storage unit. For a list of the
operating specifications, such as weight, height, and heat output, see “Operating
specifications” on page 9.
General
v Modular components:
– High-capacity disk drives
– Environmental services
monitor (ESM) boards
– Power supplies with built-in
fans
v Technology:
– Supports disk array
technology
– Supports clustering
– SCSI (Ultra160) host interface
– Redundant data storage,
power and cooling system,
and ESM boards
– Hot-swap technology for
drives, power supplies with
built-in fans, and ESM boards
Storage unit drive bays
The following sections describe the hot-swap CRUs, the switch card bay, and the
bridge card bay on the storage unit.
v User interface:
– Built-in power, activity, and
fault indicators
– Identification labeling on
customer replaceable units
(CRUs), rear indicator lights,
switches, and connectors
– Easy-to-replace drives, power
supplies, ESM boards, and
fans
Disk drive storage
v Current capabilities:
Maximum drives per storage unit:
14
ESM boards
v Technology and interfaces:
– SCSI: Ultra160
– SCSI bus interface: Two
68-pin, Very High Density
Connector Interface (VHDCI)
connectors for SCSI bus
cables
Note: Connect only SCSI bus 1
(right side) connector to the
5194-225. SCSI bus 2 (left side) is
not used.
With the hot-swap features of the storage unit, you can remove and replace hard
disk drives, power supplies/fans, and ESM boards without turning off the storage
© Copyright IBM Corp. 2001 1
unit. Therefore, you can maintain the availability of your system while a hot-swap
device is removed, installed, or replaced. See “Chapter 3. Installing and replacing
devices” on page 21 for more information.
Hot-swap drive bays
The following illustration shows the location of the hot-swap drive bays accessible
from the front of your storage unit. The storage unit supports 14 IBM Ultra160 SCSI
hard disk drives. These drives come pre-installed in a drive tray. The drive and tray
assembly is called a drive CRU (customer replaceable unit). You can install the
drive CRUs in the 14 drive bays on the front of the storage unit.
Attention: Never hot-swap a drive CRU when its green activity light emitting
diode (LED) is flashing. Hot-swap a drive CRU only when its amber fault LED is lit
(not flashing) or when the drive is inactive with the green activity LED off (not
flashing).
Bridge card bay
The bridge card is accessible from the front of the unit. You can replace the bridge
card CRU, but you must turn off the storage unit before doing so. See “Replacing a
bridge card” on page 23 for step-by-step instructions.
Attention: Never remove the bridge card while the storage unit is turned on. See
“Turning the storage unit on and off” on page 17.
ESM and power supply bays
The following illustration shows the location of the environmental services monitor
(ESM) bays (for the hot-swap ESM boards) and the power supply bays where the
hot-swap power supplies are located.
Hot-swap ESM bays
0
1
9
2
8
3
7
4
6
5
Hot-swap power supply/fan bays
Hot-swap ESM bays
The ESM boards provide a SCSI interface to the drives and monitor the
overall status of the storage unit. See “Replacing an ESM board” on
page 25 for more information.
2 5194 Network Attached Storage Model EXU Installation and User’s Guide
Switch card bay
Hot-swap power supply/fan bays
Your storage unit comes with two 500 Watt hot-swap and redundant power
supplies with built-in fans. The power supplies are redundant in that a single
power supply can provide adequate power and cooling for the entire
storage unit. A single power supply supports 14 hard disk drives; however,
both power supplies must be installed, even if one power supply is not
operational. See “Working with hot-swap power supply/fan units” on
page 26 for step-by-step instructions.
Your storage unit comes with a switch card that contains five external option
switches and four internal option switches. The switch card is located on the back
of the storage unit between the two power supplies. The switch card contains
switches that control how power is supplied to the storage unit and what storage
unit services are enabled. The internal option switches are preset to the default
position (Off). To access the four internal option switches, you must turn off the
storage unit; then remove the switch card. See “Replacing the switch card” on
page 24 for step-by-step instructions.
Attention: Never remove the switch card or change the switch card settings
while the storage unit and host server is turned on. Refer to “Turning the storage
unit on and off” on page 17.
In addition to the internal and external option switches, the switch card also has a
10-position unit ID switch for setting the storage unit ID using values 0 through 9.
System-management software, such as IBM Netfinity Manager
™
, uses the ID when
it provides data and alerts for the storage unit.
For more information on option switch settings, see “Setting the interface options
and ID settings” on page 11.
The following illustration shows the location of the switch card on the storage unit.
Chapter 1. Introduction 3
External option switches
Switch card
0
1
9
2
8
3
7
4
6
5
1
2
3
4
5
3
2
4
1
5
0
6
9
7
8
Unit ID switch
Front controls, indicators, and devices
The primary controls on the front of the storage unit are shown in the following
illustration.
Power-on LED (green)
This green LED indicates that the unit has good dc power.
General-system-error LED (amber)
When lit, this amber LED indicates that the unit has a fault, such as in a
power supply, ESM board, or hard disk drive.
Bridge card bay
This is the location of the bridge card CRU.
Drive bays
There are 14 drive bays.
Latch This multipurpose blue latch releases or locks the drive CRU in place.
4 5194 Network Attached Storage Model EXU Installation and User’s Guide
Tray handle
You can use this multipurpose handle to insert or remove a drive CRU.
Fault LED (amber)
Each drive CRU has a fault LED. When lit, this amber LED indicates a drive
failure. When flashing, this amber LED indicates that a drive Identify or
Rebuild is in progress.
Activity LED (green)
Each drive CRU has an activity LED. When flashing, this green LED
indicates drive activity.
Drive CRU
Each drive CRU consists of a slim hard disk drive and tray.
Rear controls, indicators, and connectors
Two hot-swap power supplies with built-in fans and two environmental services
monitor (ESM) boards are accessible from the back of the storage unit. These
components contain several user indicators and connectors.
Power-supply controls, indicators, and connectors
The following is a list of the controls, indicators, and connectors at back of the
storage unit. A description of each item is included:
Handle Handle
AC power LED (green)
DC power LED (green)
Fault LED (amber)
Thumbscrews Thumbscrews
0
1
9
2
8
3
7
4
6
5
Power
on/off
switch
supply/Fan CRU
Power
Power
on/off
switch
supply/Fan CRU
Thumbscrews
Loosen the thumbscrews to remove or install a power supply.
AC power connector
The power cord for the power supply connects here.
Power-supply/Fan CRU
The two hot-swap power supplies with built-in fans are located on the back
of the storage unit.
Attention: The storage unit comes with two power-supply/fan units
installed. When one power supply fails, the power-supply unit must be
replaced to re-establish redundancy. When replacing the failed unit with the
new power supply unit, ensure that this operation is performed in less than
10 minutes to prevent any overheating.
AC power connectorAC power connector
Power
The fan that is visible from the rear of the power supply is an auxiliary fan
that is normally off. This fan turns on only when the main fan within the
power supply fails.
Chapter 1. Introduction 5
Power on/off switch
Use this switch to turn the power supply on and off.
Fault LED (amber)
When completely lit, this amber fault LED indicates a power supply failure
or that a redundant power supply is not on. This LED also flashes when the
built-in fan fails.
DC power LED (green)
This green LED is lit when the storage unit is turned on and is supplying
both 5 V and 12 V dc power.
AC power LED (green)
This green LED is lit when the storage unit is receiving ac power.
Handles
The two handles are used for installing and removing the power supply.
ESM board user controls
Two environmental services monitor (ESM) boards are accessible from the back of
the storage unit. These components contain several user controls, indicators, and
connectors.
Termination-
LED (green)
ESM board
Push pin
power
LVD/SE
LED (green)
SCSI reset
LED (green)
ESM board
Fault LED (amber)
SCSI reset LED
SCSI Bus
connector 2
Activity
LED (green)
Termination-
power
LED (green)
Push pin
0
1
9
2
8
3
7
4
6
5
Fault
LED (amber)
LVD/SE
LED (green)
SCSI reset
LED (green)
SCSI Bus
connector 1
Activity
LED (green)
ESM board
Fault
LED (amber)
The environmental services monitor (ESM) boards contain the SCSI
controls, LEDs, and connectors.
When lit, this amber LED indicates an ESM board failure.
When lit, this green LED indicates a SCSI bus reset.
Push pins
Each ESM board has an orange push pin at the lower left of the board. Use
the orange push pin and lever to remove and insert the ESM board.
Termination-power LED (green)
When lit, this green LED indicates that termination power is present. When
a termination-power LED is lit, it indicates that the other end of the cable is
connected to a powered-on controller. Each external bus has a separate
termination-power LED.
6 5194 Network Attached Storage Model EXU Installation and User’s Guide
LVD/SE LED (green)
When lit, this green LED indicates that the external host bus is in low
voltage differential (LVD) mode. When this LED is off, this indicates that the
external host bus is in single-ended (SE) mode. Each external bus has a
separate LVD/SE LED. Only LVD host bus controllers are supported.
SCSI bus connector
The 68-pin Very High Density Connector Interface (VHDCI) connectors are
for attaching your SCSI cables to SCSI bus 1 and SCSI bus 2.
Activity LED (green)
When lit, this green LED indicates there is activity on the external SCSI
bus. Each external bus has a separate activity LED.
System-management software support
The storage unit provides software alert functions through the system monitor
functions provided in the IBM Netfinity Manager, IBM Netfinity Director, and IBM
ServeRAID manager software.
The following alerts are supported:
v Disk drive disabled
v Power supply failure
v Cooling failure
v Storage unit too hot
v Vital Product Data for subcomponents
Note: You must have the correct level of system-management software on your
server to enable this functionality.
You must use ServeRAID Version 4.20 or later for your ServeRAID controller to
report status and alerts properly. To download the latest ServeRAID software, visit
the IBM Web site at:
www.ibm.com/storage/support/nas
For up-to-date information about the IBM Netfinity Manager and Netfinity Director
software support available for your storage unit, visit the IBM Web site at:
www.ibm.com/storage/support/nas
For Netfinity Manager users, download Netfinity Manager Version 5.20.6 SP1 or
later.
For Netfinity Director users, download Netfinity Director, UM Server extensions
Version 2.12 SP1.
Chapter 1. Introduction 7
8 5194 Network Attached Storage Model EXU Installation and User’s Guide
Chapter 2. Installing the storage unit
You can install the storage unit in an Electronic Industries Association (EIA) 310
standard rack.
You will need a flat-blade screwdriver and a Phillips-head screwdriver to install your
storage unit. Each type of enclosure comes with general installation instructions for
installing optional devices.
Operating specifications
The following table summarizes the operating specifications of the storage unit.
Electrical input
v Sine-wave input (50 to 60 Hz) is
required
v Input voltage:
– Low range:
- Minimum: 90 V ac
- Maximum: 127 V ac
– High range:
- Minimum: 198 V ac
- Maximum: 257 V ac
– Input kilovolt-amperes (kVA)
approximately:
- Minimum configuration: 0.06
kVA
- Maximum configuration: 0.45
kVA
Environment
v Air temperature:
– storage unit on: 10° to 35° C
(50° to 95° F) Altitude: 0 to 914
m (3000 ft)
– storage unit on: 10° to 32° C
(50° to 90° F) Altitude: 914 m
(3000 ft.) to 2133 m (700 ft)
v Humidity: 8% to 80%
Size (with front panel and without
mounting rails)
v Depth: 53.8 cm (21.2 in)
v Height: 12.8 cm (5 in)
v Width: 44.7 cm (17.6 in)
Weight
Typical storage unit fully loaded: 36.1
kg (79.4 lbs)
Acoustical noise emissions values
For open bay (no drives installed) and
maximum system configurations (14
hard disk drives installed).
v Sound power (idling):
– 5.6 bels (open bay)
– 5.7 bels (typical)
v Sound power (operating):
– 5.6 bels (open bay)
– 6.5 bels (typical)
v Sound pressure (idling):
– 44 dBA (open bay)
– 47 dBA (typical)
v Sound pressure (operating):
– 44 dBA (open bay)
– 54 dBA (typical)
These levels are measured in
controlled acoustical environments
according to ISO 7779 and are
reported in accordance with ISO
9296. The declared sound power
levels indicate an upper limit, below
which a large portion of machines
operate. Sound pressure levels in
your location might exceed the
average 1-meter values stated
because of room reflections and other
nearby noise.
Inventory checklist
After you fully unpack your storage unit, verify that you have the following items:
v Hardware:
– IBM TotalStorage Network Attached Storage 200 Storage Unit
– Two power cords
– One 2 m (6.56 ft) SCSI cable
– One sheet of storage unit ID (0-9) labels
– One sheet of four SCSI ID labels
© Copyright IBM Corp. 2001 9
Getting started
– One rack-mounting hardware kit
- Two rails (right and left assembly)
- Two M5 screws
- Ten M6 screws
- Ten M6 cage nuts
- Ten M6 clip nuts
v Publications:
– IBM TotalStorage Network Attached Storage 200 Storage Unit Installation and
User’s Guide (this book)
– IBM Safety Book
– Template for installing the storage unit in a rack
If an item is missing or damaged, contact your IBM reseller or your IBM marketing
representative.
If you have not already done so, take a moment to review the information in this
chapter and record your storage unit serial number in the table in “Identification
numbers” on page 35. Then, return to this chapter to begin the installation process.
Before you begin, review the following assumptions:
v If you are installing the storage unit in a rack, you have already installed the
other components in the rack and moved the rack to its permanent operating
location.
v The installation site meets all area, environmental, power, and site requirements
for the storage unit. See the storage unit requirements listed under “Operating
specifications” on page 9.
Preparing the storage unit
This section explains how to remove the CRUs and set the option switches to
prepare the storage unit for installation.
Removing CRUs
Attention: Static electricity, though harmless to you, can seriously damage
storage unit components or options. See “Handling electrostatic discharge-sensitive
devices” on page 54 for details.
Attention: If you have data stored on the drives, label the drives before you
remove them. Then, when you replace the drives, install each one in the same
drive bay from which you removed it. Failure to do so could result in a loss of data.
See “Chapter 3. Installing and replacing devices” on page 21 for information on
removing the CRUs.
It is easier to lift the storage unit and install it in a rack if you remove all CRUs (disk
drives, power supplies, and ESMs) first. A fully loaded storage unit with 14 hard disk
drives and two power supplies installed weighs 36.1 kg (79.5 lb). If you remove all
the CRUs, you can reduce the overall weight.
10 5194 Network Attached Storage Model EXU Installation and User’s Guide
Statement 4
≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)
CAUTION:
Use safe practices when lifting.
Setting the interface options and ID settings
When you install a drive CRU in the storage unit, the drive tray plugs into a printed
circuit board called the midplane. The midplane sets the SCSI bus number and ID
automatically.
The switch card located on the back of the storage unit has five external option
switches, four internal option switches, and a unit ID switch. It is easier to set these
switches before you install the storage unit in a rack or tower enclosure.
On
1
2
3
4
Internal
options switches
Attention: Always set the option switches while the storage unit and host server
are turned off. Failure to do so will result in loss of data. See “Turning the storage
unit on and off” on page 17.
External option switches
3
4
2
5
1
6
0
7
9
8
3
2
4
1
5
0
6
9
7
8
Unit ID switch
External option switches
The five option switches on the exterior of the switch card are: Option switch 1
controls the power supply to the storage unit. Option switches 2 through 5 are
reserved; leave these switches in the default positions.
Option switch 1 — Power-control switch
When this option switch is set to Off, the storage unit turns on and off
automatically when you turn the host machine on and off. This occurs only
if termination power is present (the termination-power LED is on) at the
external SCSI connector.
Chapter 2. Installing the storage unit 11
When this option switch is set to On (the default), you must turn the storage
unit on and off separately.
Option switches 2 through 5 — Reserved
These option switches are reserved; leave these option switches set to the
default positions. Set switches 2 through 5 (On, On, Off, Off) respectively.
Internal option switches
All internal option switches must be set in the Off (default) position.
Unit ID switch
The unit ID switch has 10 settings. You can use these settings (0 through 9) to set
an ID for the storage unit. System-management software, such as IBM Netfinity
Director, uses this storage unit ID when it provides data and alerts for the storage
unit.
The Unit ID switch comes with a factory default of ID 0. Because each 5194-EXU is
on a separate SCSI channel connected to the Model 225’s SCSI RAID card, you
can leave this Unit ID configuration as ID 0 for any attached 5194-EXU units.
12 5194 Network Attached Storage Model EXU Installation and User’s Guide
Installing the storage unit in a rack
The storage unit requires 3U (5.25 in) of Electronic Industries Association (EIA)
rack-mounting space.
Attention: Static electricity, though harmless to you, can seriously damage
storage unit components or options. See “Handling electrostatic discharge-sensitive
devices” on page 54 for details.
Important: Review the documentation that comes with your rack enclosure for
safety and cabling considerations. When installing your storage unit in a rack, take
the following precautions:
v Read “Removing CRUs” on page 10 about making the storage unit easier to
handle.
v Install the storage unit in a maximum 35 degree C environment.
v To ensure proper air flow, do not block the air vents; usually 15 cm (6 inches) of
air space is sufficient.
Note: Because of the limited space in some racks, it might be easier to connect
and route cables before you install the mounting brackets and hardware
devices.
v To ensure stability, take precautions to prevent uneven loading of the rack.
Loading of the rack should begin at the bottom.
v When multiple components are installed in a rack, take precautions to prevent
overloading of the power outlets.
v The storage unit should always be connected to a properly grounded outlet.
v Refer to the rack documentation for instructions on removing the rack enclosure
doors and side panels.
Use the rack-mounting template and installation instructions that come with the
storage unit to locate the rack-mounting holes and to install the unit in a rack
cabinet. If you do not have the template and instructions, you can use the following
steps to install your storage unit:
1. Use the following illustration of the front and rear rack mounting flanges to
determine the appropriate rack-mounting holes for installing cage nuts or clip
nuts to secure the storage unit rails. From left to right, the illustration shows
the front and rear flanges respectively.
Front Rear
Chapter 2. Installing the storage unit 13
Note: Use clip nuts if your rack has holes. If your rack has square holes, you
can use the rack-insertion tool or a flat-blade screwdriver to install cage
nuts.
2. On the rail marked R, loosen the four screws2.
3. Hold the rail against the outside of the right rack-mounting flange, and loosely
insert the two front M6 screws 1.
4. Extend the rail outside of the rear rack-mounting flange; then, install and
tighten two rear M6 screws 3.
5. Tighten the two front screws 1; then, tighten the four screws 2.
Repeat step 2 through step 5 to install the rail marked L on the left side of the
rack.
14 5194 Network Attached Storage Model EXU Installation and User’s Guide
6. Loosely insert one M5 screw 1 into each rail.
Statement 4
≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)
CAUTION:
Use safe practices when lifting.
7. Slide the storage unit into the rack, and insert the M6 screws 1.Donot
overtighten the M6 1 screws.
8. Tighten the rear screws 2.
9. Verify that option switches 1 and 2 (inside the switch card) are set to Off. See
“Setting the interface options and ID settings” on page 11 for more information.
10. Install hard disk drives and power supplies in the storage unit according to
“Chapter 3. Installing and replacing devices” on page 21; then, return here to
complete the installation.
11. Continue with “Completing the installation” on page 16.
Chapter 2. Installing the storage unit 15
Completing the installation
After you install the hard disk drives and power supplies, follow the instructions in
this section to complete the installation. Instructions for installing the identification
labels and cabling the storage unit are included.
Installing identification labels
Your storage unit comes with one sheet of 10 labels (0-9) and one sheet of 4 labels
(SCSI ID) labels.
Complete the following steps to install the SCSI identification labels:
To install the label:
1. Locate the SCSI ID label for your configuration. Use the single-bus label as
illustrated below.
a. Orient the label so that the printed numbers are legible from left-to-right.
b. Peel the backing away from the adhesive side of the label.
c. Carefully butt the edge of the SCSI ID label up against the edge of the serial
number label so that the 14 printed ID numbers are located beneath each of
the drive bays.
d. Apply the label to the front of the unit, as shown in the following illustration.
0
1234
Expansion unit ID label
5
69810
SCSI ID label
11 12
13
14
Serial number label
16 5194 Network Attached Storage Model EXU Installation and User’s Guide
2. Install the storage unit ID label.
3.
a. Verify the setting of the storage unit number switch (0-9).
b. Apply the storage unit ID label that matches the setting for the unit ID switch
in the blank label area directly to the left of the SCSI ID label.
4. Continue with “Cabling the storage unit”.
Cabling the storage unit
This section provides the SCSI and power cabling information. After you attach your
SCSI and power cables, use the instructions provided in “Turning the storage unit
on and off” for the initial startup of the storage unit.
SCSI cabling information
The storage unit comes with two ESM boards. There are two 68-pin SCSI Very
High Density Connector Interface (VHDCI) connectors. From left to right as seen
from the back, these connectors are for SCSI bus 2 and SCSI bus 1. See “Rear
controls, indicators, and connectors” on page 5 for the location of these connectors.
Note: Connect only the SCSI bus 1 (right side) connector to the 5194-225. SCSI
bus 2 (left side) is not used.
SCSI cable restriction
The SCSI controller inside your engine must have a dedicated SCSI channel for the
storage unit. If an external channel is being used for the storage unit, its
corresponding internal channel must not be used for other devices.
Power cabling
The storage unit uses two power cords. You can connect the power cords to a
primary power unit inside the rack, such as a properly grounded ac distribution unit
or uninterruptible power supply (UPS), or to an external source, such as a properly
grounded electrical outlet.
Attach the power supply power cords as follows:
1. Connect the power cord to the power supply.
2. Plug the power supply cord into a properly grounded electrical outlet.
3. Go to “Turning the storage unit on and off” for information about the initial
startup of the storage unit.
Turning the storage unit on and off
This section contains instructions for turning the storage unit on and off under
normal and emergency circumstances.
If you are turning on the storage unit after an emergency shutdown or power
outage, see “Turning on the storage unit after an emergency” on page 19.
Turning on the storage unit
Use this procedure to turn on the power for the initial startup of the storage unit.
1. Verify that:
a. All cables are properly attached.
b. Both power cords are plugged into the back of the storage unit and into
properly grounded electrical outlets.
c. All hard disk drives are locked securely in place.
Chapter 2. Installing the storage unit 17
d. All switches are set correctly: the internal option switches 1 through 4,
external option switches 1 through 5, and the unit ID switch on the storage
unit. See “Setting the interface options and ID settings” on page 11 for more
information.
2. Ensure engine is up and running before you continue with Step 3.
3. Turn on both power supplies on the back of the storage unit.
The storage unit might take a few seconds to turn on. During this time, you
might see the fault (amber) and the power (green) LEDs on the storage unit turn
on and off intermittently. When the power-on sequence is complete, only the
power (green) LEDs on the front and back should remain on. If one or more
fault (amber) LEDs remain lit, see “Troubleshooting” on page 29.
Attention: If you have data stored on the drives, label the drives before you
remove them. Then, when you replace the drives, install each one in the same
drive bay from which you removed it. Failure to do so will result in a loss of
data.
Turning off the storage unit
Attention: Except in an emergency situation, never turn off the power if any fault
LEDs are lit on the storage unit. Correct the fault before you attempt to turn off the
power, using the proper troubleshooting or servicing procedure. This will ensure that
the storage unit will turn on correctly later. Refer to “Troubleshooting” on page 29.
Statement 5
CAUTION:
The power control button on the device and 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
The storage unit is designed to run continuously, 24 hours a day. Turn off the power
only when at least one of the following is true:
v Instructions in a hardware or software procedure require you to turn off the
power.
v A service technician tells you to turn off the power.
v A power outage or emergency situation occurs, see “Turning off the storage unit
in an emergency” on page 19.
Use the following procedure to turn off the storage unit:
1. Power down the server attached to the storage unit.
2. Make sure that all amber fault LEDs are off. If any fault LEDs are lit (drives,
power supplies, or ESM boards), correct the problem before you turn off the
power. For guidance, see “Troubleshooting” on page 29.
3. Turn off both power supplies.
18 5194 Network Attached Storage Model EXU Installation and User’s Guide
Turning off the storage unit in an emergency
Attention: Emergency situations might include fire, flood, extreme weather
conditions, or other hazardous circumstances. If a power outage or emergency
situation occurs, always turn off all power switches on all computing equipment.
This will help safeguard your equipment from potential damage due to electrical
surges when power is restored. If the storage unit loses power unexpectedly, it
might be due to a hardware failure in the power system or midplane. See
“Troubleshooting” on page 29.
Use the following procedure to turn off the storage unit during an emergency
situation:
1. Power down the server attached to the storage unit.
2. If you have time, stop all activity and check the LEDs (front and back). Make
note of any fault LEDs that are lit so that you can correct the problem when you
turn on the power again.
3. Turn off all power supplies; then, unplug the power cables from the storage unit.
Turning on the storage unit after an emergency
Use the following procedure to restart the storage unit if you turned off the power
supplies during an emergency shutdown, or if a power failure or a power outage
occurred:
1. After the emergency situation is over or power is restored, check the storage
unit for damage. If there is no visible damage, continue with Step 2; otherwise,
have your unit serviced.
2. Ensure engine is up and running before you continue with Step 3.
3. After you have checked for damage, plug in the storage-unit power cables and
turn on the power switches.
4. Turn on both power supplies on the back of the storage unit.
5. Only the power (green) LEDs on the front and back should be on. If one or
more of the fault (amber) LEDs are on, see “Troubleshooting” on page 29 for
instructions.
6. Use your installed software application as appropriate to check the status of the
storage unit.
Chapter 2. Installing the storage unit 19
20 5194 Network Attached Storage Model EXU Installation and User’s Guide
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