Microsoft, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S.
and other countries.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions
contained herein. The information in this document is provided “as is” without warranty of
any kind and is subject to change without notice. The warranties for HP products are set forth
in the express limited warranty statements accompanying such products. Nothing herein
should be construed as constituting an additional warranty.
HP Smart Array 5300 Controller User Guide
October 2002 (Fifth Edition)
Part Number 135606-005
Contents
About This Guide
Audience Assumptions...................................................................................................... ix
Important Safety Information ............................................................................................ix
Symbols on Equipment...................................................................................................... ix
Rack Stability..................................................................................................................... xi
Symbols in Text.................................................................................................................xi
Related Documents........................................................................................................... xii
Automatic Data Recovery.........................................................................................E-5
General Aspects of Drive Replacement .......................................................................... E-6
Drive Failure During Rebuild................................................................................... E-7
Moving Drives and Arrays.............................................................................................. E-9
Upgrading Hard Drive Capacity............................................................................. E-10
Expanding and Extending Capacity........................................................................E-11
vi HP Smart Array 5300 Controller User Guide
Appendix F
Probability of Logical Drive Failure
Appendix G
POST Error Messages
Appendix H
Questions and Answers
Glossary
Index
Contents
HP Smart Array 5300 Controller User Guide vii
This guide provides step-by-step instructions for installation, and reference
information for operation, troubleshooting, and future upgrades for the HP Smart
Array 5300 Controller.
Audience Assumptions
This guide is for the person who installs, administers, and troubleshoots servers. HP
assumes you are qualified in the servicing of computer equipment and trained in
recognizing hazards in products with hazardous energy levels.
Important Safety Information
Before installing this product, read the Important Safety Information document
included with the server.
About This Guide
Symbols on Equipment
The following symbols may be placed on equipment to indicate the presence of
potentially hazardous conditions:
WARNING: This symbol, in conjunction with any of the following symbols,
indicates the presence of a potential hazard. The potential for injury exists if
warnings are not observed. Consult your documentation for specific details.
HP Smart Array 5300 Controller User Guide ix
About This Guide
Weight in kg
Weight in lb
This symbol indicates the presence of hazardous energy circuits or electric
shock hazards. Refer all servicing to qualified personnel.
WARNING: To reduce the risk of injury from electric shock hazards, do not
open this enclosure. Refer all maintenance, upgrades, and servicing to
qualified personnel.
This symbol indicates the presence of electric shock hazards. The area
contains no user or field serviceable parts. Do not open for any reason.
WARNING: To reduce the risk of injury from electric shock hazards, do not
open this enclosure
This symbol on an RJ-45 receptacle indicates a network interface connection.
WARNING: To reduce the risk of electric shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors into this
receptacle.
This symbol indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component, allow the
surface to cool before touching.
These symbols, on power supplies or systems, indicate that the
equipment is supplied by multiple sources of power.
WARNING: To reduce the risk of injury from electric shock,
remove all power cords to completely disconnect power from the
system.
This symbol indicates that the component exceeds the recommended
weight for one individual to handle safely.
WARNING: To reduce the risk of personal injury or damage to the
equipment, observe local occupational health and safety requirements
and guidelines for manual material handling.
x HP Smart Array 5300 Controller User Guide
Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
• The leveling jacks are extended to the floor.
• The full weight of the rack rests on the leveling jacks.
• The stabilizing feet are attached to the rack if it is a single-rack installation.
• The racks are coupled together in multiple-rack installations.
• Only one component is extended at a time. A rack may become unstable if
more than one component is extended for any reason.
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
About This Guide
CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents essential information to explain a concept
or complete a task.
NOTE: Text set off in this manner presents additional information to emphasize or supplement
important points of the main text.
HP Smart Array 5300 Controller User Guide xi
About This Guide
Related Documents
For additional information on the topics covered in this guide, refer to the following
documentation:
• HP Array Configuration Utility 6.0 User Guide (on the software CD provided
with the server, or downloadable from the HP website)
• HP Servers Troubleshooting Guide (on the Documentation CD for the server)
• HP ROM-Based Setup Utility User Guide (on the Documentation CD for the
server, or downloadable from the HP website)
Getting Help
If you have a problem and have exhausted the information in this guide, you can get
further information and other help in the following locations.
Technical Support
In North America, call the HP Technical Support Phone Center at 1-800-652-6672.
This service is available 24 hours a day, 7 days a week. For continuous quality
improvement, calls may be recorded or monitored. Outside North America, call the
nearest HP Technical Support Phone Center. Telephone numbers for worldwide
Technical Support Centers are listed on the HP website,
Be sure to have the following information available before you call HP:
• Technical support registration number (if applicable)
• Product serial number
• Product model name and number
• Applicable error messages
• Add-on boards or hardware
• Third-party hardware or software
• Operating system type and revision level
xii HP Smart Array 5300 Controller User Guide
www.hp.com.
HP Website
The HP website has information on this product as well as the latest drivers and flash
ROM images. You can access the HP website at
Authorized Reseller
For the name of your nearest authorized reseller:
• In the United States, call 1-800-345-1518.
• In Canada, call 1-800-263-5868.
• Elsewhere, see the HP website for locations and telephone numbers.
Reader’s Comments
HP welcomes your comments on this guide. Please send your comments and
suggestions by e-mail to
ServerDocumentation@hp.com.
About This Guide
www.hp.com.
HP Smart Array 5300 Controller User Guide xiii
1
Board Components and Features
The HP Smart Array 5300 Series of controllers comprises two models, the 5302 and
the 5304. Model 5302 has two Wide Ultra3 SCSI channels and 128 MB of cache;
model 5304 has four Wide Ultra3 SCSI channels and 256 MB of cache. You can
upgrade the 5302 model to have four channels, 256 MB of cache, or both, by means
of the appropriate option kits.
1
3
2
Figure 1-1: Smart Array 5304 Controller
Item Description
1 Two internal 68-pin Wide SCSI connectors (port 1
nearer the bracket, port 2 nearer the board center)
2 Four external (VHDCI) connectors (ports 1 and 3
nearer the main board)
3 Array accelerator cache
HP Smart Array 5300 Controller User Guide 1-1
Board Components and Features
NOTE: On both controller models, ports 1 and 2 each have two connectors (one internal and
one external). However, only one connector can be used per port at any given time. Ports 3
and 4 (available on the 5304) can be used only for external drives.
1
2
Figure 1-2: Smart Array 5302 Controller
Item Description
1 Two internal 68-pin Wide SCSI connectors (port 1
nearer the bracket, port 2 nearer the board center)
2 Two external (VHDCI) connectors (port 1 nearer the
board)
3 Array accelerator cache
3
1-2 HP Smart Array 5300 Controller User Guide
Figure 1-3: Two- to four-channel adapter upgrade
option
Board Components and Features
Figure 1-4: Array accelerator cache with batteries
For details of the controller board specifications, refer to Appendix C.
HP Smart Array 5300 Controller User Guide 1-3
Board Components and Features
Overview of Controller Features
• Two or four Wide Ultra3 SCSI channels, supporting up to 56 drives (4 channels,
14 drives per channel)
• Support for Microsoft Windows 2000, Windows NT 4.0, Linux, Novell NetWare
5.x, and NetWare 6 operating systems
• Support for the Universal Hot Plug Tape Drive, with storage capacity up to 100
GB and LVD transfer rates up to 12 MB per second
• Support for the StorageWorks SAN Access Module
• Backward compatibility with Wide Ultra2 devices
• Removable array accelerator
• 64-bit, 66-MHz PCI system interface
• Other features supported:
— RAID fault-tolerance (0, 1+0, 5, ADG) (refer to Chapter 9 for instructions on
enabling RAID ADG)
— Online RAID migration between any two levels
— Online array capacity expansion
— Online logical drive capacity extension
— Hot-pluggable hard drives and tape drives
— Drive movement
— Adjustable stripe size
— Performance monitoring through Insight Manager
— S.M.A.R.T. hard drives
— Drive pre-failure notification
— Multiple online spares per array
— Tagged command queuing
— Background initialization
— Multiple logical drives per array
1-4HP Smart Array 5300 Controller User Guide
Board Components and Features
Overview of Array Accelerator Features
The array accelerator is a high performance, battery-backed, 100-MHz SDRAM
DIMM cache module.
Array controllers use cache to store read data from the hard drives. The system can
later access this read data. The controller firmware uses the read-ahead and most
recently used caching algorithms.
Array controllers also use cache to complete drive write operations more quickly.
This use of the cache has further performance benefits:
• If the system requires data that still resides in write cache, the controller delivers
this data from the cache. This process is quicker than delivering the data from a
drive.
• If the system writes new data to the same location, the controller overwrites the
cache contents. This eliminates a drive write operation.
• If the system performs a RAID 1 procedure, the controller gets mirrored data
from the cache instead of from host memory.
• If the system performs a RAID 5 procedure, the write cache collects enough data
blocks from several write accesses to carry out a full stripe write to the hard
drives. This operation eliminates the need to calculate and update parity
information each time that a data block is written to the drive.
With a battery-backed cache available, the array controller can complete the
following operations more rapidly:
• Array capacity expansion—the expansion of a logical drive volume to include
more hard drives
• Stripe size migration—the adjustment of the size of data blocks within a stripe,
done to improve performance
• RAID level migration—the adjustment of RAID level to improve the fault
tolerance of the array
HP Smart Array 5300 Controller User Guide 1-5
Board Components and Features
For each of these operations, data has to be reorganized among hard drives, and must
be saved to non-volatile storage during the operation. (For further details of these
operations, refer to Chapter 7, Appendix D, and Appendix E.) Without batterybacked cache, the data can only be stored at empty locations within the drive array,
so these operations cannot occur at all if the array is full.
If the array controller or server fails before cached data can be stored on the array, the
array accelerator and its integrated batteries may be removed from one array
controller and installed on another controller of the same type. Any data in the array
accelerator that has not been written to the hard drive will be transferred to the other
array controller.
Other features of the array accelerator include:
• Cache capacity of 96-MB or 224-MB (32 MB of the cache is used for transfer
buffer)
• Adjustable read/write ratio (usually set during array configuration as described in
Chapter 7, but can be changed at any time)
• Error checking and correcting (ECC) memory, providing single-bit data
correction
Sometimes, the Automatic Performance Tuning feature disables the array accelerator.
You can also disable the array accelerator manually through the Array Configuration
Utility (refer to Chapter 7 for details).
Batteries
The array accelerator cache has two rechargeable and replaceable NiMH battery
packs. If the array accelerator is removed from the array controller, the battery packs
maintain any cached data on the array accelerator for up to four continuous days.
1-6HP Smart Array 5300 Controller User Guide
Board Components and Features
Figure 1-5: Battery packs
This data protection (and the time limit) also applies if an equipment failure or power
outage occurs. When power is restored to the system, an initialization process writes
the preserved data to the hard drives.
The batteries are continuously recharged using a trickle-charging process whenever
the system power is on. Under normal operating conditions, a battery pack lasts for
three years before replacement is necessary.
IMPORTANT: The batteries on a new array controller may have a low charge when the
controller board is first installed. In this case, a Power-On Self-Test (POST) message 1794 is
displayed when the server is powered up (refer to Appendix G), indicating that the array
accelerator is temporarily disabled. No action is required on your part, since the internal
circuitry automatically recharges the batteries and enables the cache. The recharge process
takes less than four hours. The array controller will function properly during this time, although
without the performance advantage of the array accelerator. When the batteries are charged to
an acceptable capacity, the array accelerator is automatically enabled.
For battery replacement instructions, refer to Chapter 9.
HP Smart Array 5300 Controller User Guide 1-7
Board Components and Features
PCI System Interface
Smart Array 5300 controllers interface to the server through a high-performance
64-bit PCI bus that:
• Runs at 66 MHz
• Provides a high-speed path (up to 528 MB/s) between the system board and the
controller
• Includes two parity protection signals
The Smart Array 5300 Controller is a PCI Bus Master device conforming to Rev. 2.2
of the PCI Local Bus Specification. As a bus master device, it takes control of the
PCI bus during high-speed transfers, freeing the system processor to handle
application processing or other types of tasks.
For maximum performance, HP recommends that you use only 66-MHz devices on
any given 66-MHz PCI bus. Combining 66-MHz and 33-MHz devices on a PCI bus
will decrease the overall bandwidth to 33-MHz speeds.
SCSI Support
The Smart Array 5300 Controller supports drives that conform to Wide Ultra3 and
Wide Ultra2 standards. Although Wide Ultra2 devices operate at a different
maximum speed from Wide Ultra3 devices, operating speeds are unaffected if they
are connected to the same SCSI bus because they both use low voltage differential
(LVD) signaling.
Fault Management Features
The array controller and the network operating system support several fault
management and data reliability features that minimize the impact of hard drive
defects on your system.
1-8HP Smart Array 5300 Controller User Guide
Board Components and Features
• Auto-Reliability Monitoring (ARM) is a background process that scans hard
drives for bad sectors in fault-tolerant logical drives. ARM also verifies the
consistency of parity data in logical drives that are using RAID 5 or RAID ADG.
This process assures that you can recover all data successfully if a drive failure
occurs in the future. ARM operates only when you select a fault-tolerant
configuration (RAID 1 or higher).
• Dynamic sector repair by the controller automatically remaps any sectors that
have media faults (detected either during normal operation or by auto reliability
monitoring).
• S.M.A.R.T. is an industry-standard diagnostic and failure-prediction feature of
hard drives, developed in collaboration with the hard drive industry. It monitors
several factors that can be used to predict imminent hard drive failure due to
mechanical causes. Such factors include the condition of the read/write head, the
seek error rate, and the spin-up time. When a threshold value is exceeded for one
of these factors, the drive sends an alert that failure is imminent. Thus, the user
can back up data and replace the drive before drive failure occurs.
NOTE: An online spare does not become active and start rebuilding when the imminent
failure alert is sent, because the degraded drive has not actually failed yet and is still
online. The online spare is activated only after a drive in the array has failed.
• Drive failure alert features cause an alert message to be displayed on the
system monitor when drive failure occurs. Different server models use different
messages for different situations. These messages are described in your server
documentation.
• Interim data recovery occurs if a drive fails in fault-tolerant configurations
(RAID 1 or higher). In this situation, the system will still process I/O requests,
but at a reduced performance level. Replace the failed drive as soon as possible
to restore performance and full fault tolerance for that logical drive. Otherwise, if
another hard drive fails before data has been rebuilt, the logical volume will fail
and data will be lost. Refer to Appendix E for more information about recovering
from drive failure.
• POST or the Array Diagnostics Utility will also reveal imminent drive failure.
HP Smart Array 5300 Controller User Guide 1-9
Board Components and Features
• Recovery ROM is a redundancy feature that ensures continuous system
availability by providing a backup ROM. This feature protects against corruption
of a ROM image (caused, for example, by power fluctuation during ROM
upgrade). If corruption occurs, the server automatically restarts using the
remaining good copy of the ROM image.
When you upgrade the ROM, the inactive image (the one not being used by the
system) is upgraded. There is not normally any noticeable difference in
operation. When you use Recovery ROM for the first time, however, both ROM
images are upgraded, causing a boot delay of about 60 seconds.
Other options, such as Insight Manager, provide additional drive failure features.
Refer to your authorized reseller for more information about these products.
1-10 HP Smart Array 5300 Controller User Guide
The details of the steps required to install the controller depend on whether the server
has an operating system installed and contains data. The flowcharts in Figure 2-1 and
Figure 2-2 summarize the installation procedures for the most common scenarios.
Procedure for a New System
Install the controller
1
hardware (Chapter 3), if
it is not pre-installed.
Set the boot controller
5
(Chapter 6).
Create at least one
6
logical drive and format
it (Chapter 7).
Install the operating
7
system and device
drivers (Chapter 8).
:
:
. . . . . . .
. . . . . . .
. . . . . . .
Installation Overview
Update the system
2
firmware (Chapter 4).
Update the controller
3
firmware (Chapter 5).
Configure the system
4
(Chapter 6).
Create and format
8
additional logical drives
if desired (Chapter 7).
:
:
2
Figure 2-1: Controller installation in a new system
HP Smart Array 5300 Controller User Guide 2-1
Installation Overview
Procedure for a Pre-configured System
Back up data (required if migrating
1
from a non-array controller).
Set the controller order (Chapter 6).
5
Update the controller firmware
6
(Chapter 5).
If using the System Configuration
7
Utility, update the system partition
(Chapter 5), and then check the
controller order (Chapter 6).
If migrating from a non-array
11
controller, restore data from backup.
:
:
- - - - -
- - - - -
- - - - -
- - - - -
Update the system firmware
2
(Chapter 4).
If the controller is to be the boot
3
device, install the device driver for
your operating system (Chapter 8).
Otherwise, continue with step 4.
Install the controller hardware
4
(Chapter 3).
If the controller is not to be the boot
8
device, install the device driver for
your operating system (Chapter 8).
Update Insight Manager Agents if
9
new versions are available (Chapter
8).
Create and format logical drives as
10
desired (Chapter 7).
:
:
:
:
Figure 2-2: Controller installation in an already
configured system
2-2 HP Smart Array 5300 Controller User Guide
Preparing the Server
Before installing the controller in the server, back up all data. This step is mandatory
if you are moving non-arrayed SCSI drives to a Smart Array controller, because data
is not preserved during a move between array controllers and non-array controllers.
WARNING: To reduce the risk of personal injury or damage to the equipment,
consult the safety information and user documentation provided with your
computer before attempting the installation.
Many computers are capable of producing energy levels that are considered
hazardous. These computers are intended to be serviced by qualified
personnel trained to deal with those hazards. Do not remove enclosures or
attempt to bypass any interlocks that may be provided for the purpose of
removing these hazardous conditions.
3
Installing the Hardware
If your server supports hot-pluggable devices, go directly to the section, “Installing
the Smart Array Controller.”
To prepare a server that does not support hot-pluggable devices:
1. Close all applications.
2. Power down the server.
CAUTION: In systems using external data storage, be sure that the server is the
first unit powered down and the last unit to be powered back up. Doing this
ensures that the system will not erroneously mark the drives as “failed.”
3. Power down any peripheral devices that are attached to the server.
HP Smart Array 5300 Controller User Guide 3-1
Installing the Hardware
4. Unplug the AC power cord from the outlet, and then from the server.
IMPORTANT: If you will be replacing a Smart controller with a Smart Array controller, see
the “External Cabling for HP Servers” section to determine the external cabling
requirements.
5. Disconnect any peripheral devices from the server.
WARNING: To reduce the risk of personal injury from hot surfaces, allow
the internal system components and hot-plug hard drives to cool before
touching them.
CAUTION: Electrostatic discharge (ESD) can damage electronic components.
Be sure that you are properly grounded before continuing the installation
procedure. See Appendix B for ESD information.
Installing the Smart Array Controller
1. Remove or open the access panel.
2. Select an available 66-MHz PCI slot. Slots that use a 64-bit interface may
provide higher performance.
3. Remove the slot cover or open the hot-plug latch. Save the retaining screw, if one
is present.
4. Slide the controller board along the slot alignment guide.
3-2HP Smart Array 5300 Controller User Guide
Installing the Hardware
Figure 3-1: Installing a Smart Array 5300 Controller
NOTE: Your server may look slightly different from the one illustrated.
5. Press the controller board firmly into the slot so that the contacts on the board
edge are properly seated in the system board connector.
6. Secure the board in place with the hot-plug latch or retaining screw.
7. Continue by following the instructions given in “Connecting the Cables.”
Connecting the Cables
Each port on the controller supports up to 14 drives. Ports 1 and 2 each have two
SCSI connectors, one for external storage units and one for internal hard drives in the
server. The two connectors for a given port cannot be used simultaneously. Ports 3
and 4 (present on the 5304 model, and also on the 5302 model with an attached 2- to
4-channel adapter) are only for external storage units.
Peripherals attached to any of the connectors must have a unique SCSI ID value in
the range of 0 to 15 (except ID 7, which is reserved for controller use). The SCSI ID
value determines the priority given to the device when it attempts to use the SCSI
bus.
HP Smart Array 5300 Controller User Guide 3-3
Installing the Hardware
On HP and Compaq-branded products that support hot-pluggable drives, the SCSI
IDs for peripherals are automatically set. For non-hot-pluggable devices, the IDs
must be set manually by using switches or jumpers on the device itself.
IMPORTANT: When replacing an existing Smart controller with a Smart Array controller
without reconfiguring the arrays, all of the drives should be connected exactly as they were on
the old controller (port 1 to port 1, controller 1 to controller 1, and so on).
SCSI buses require termination on both ends to prevent signal degradation. In HP and
Compaq-branded servers and storage systems, however, the controller, SCSI cable,
and backplane already provide this termination.
Internal Cabling for HP Servers
1. If the device is not hot pluggable, power down the system.
2. Install drives into the removable media bays on the server. Drives that are to be
grouped in the same array should have the same capacity.
For detailed drive installation instructions, consult the documentation that
accompanied your drives.
The exact procedure from this point depends upon whether the device is hot
pluggable.
— If the drives are hot pluggable, go to step 3.
— If the drives are not hot pluggable, go to step 4.
3. Attach the internal point-to-point SCSI cable (provided with your server) from an
internal port of the controller to the hot-plug drive cage.
For duplex drive cage options, use both internal ports.
The hot-pluggable drives are now ready to use.
4. For each SCSI bus, manually set the SCSI ID on each drive to a unique value in
the range of 0 to 15, except 7 (which is reserved for controller use). For detailed
instructions, consult the documentation that is provided with the drive.
5. Attach the multi-device SCSI cable from the internal port 1 or port 2 of the Smart
Array controller to the non-hot-pluggable hard drives.
3-4 HP Smart Array 5300 Controller User Guide
The multi-device cable may have been provided with your server. If you need
additional cables, order the cable option kit, Part Number 166389-B21. This
cable is equipped to terminate either Wide Ultra3 or Wide Ultra2 drives.
CAUTION: Cable assembly 148785-001 is included in option kit 166389-B21
and is required with Wide Ultra3 drives. Failure to use this cable may result in
reduced performance and/or data loss.
For additional information about drive installation, see Appendix E.
External Cabling for HP Servers
All HP and Compaq-branded Storage Enclosure models include external SCSI
cables. Check the connector type on your storage device to identify the cable type
needed. See Figure 3-2 and Table 3-1 for details.
Installing the Hardware
2
1
3
4
Figure 3-2: Identifying SCSI cable connectors
Item Description
1 External 68-pin Wide
2 External offset VHDCI
3 Internal 50-pin narrow
4 Internal 68-pin Wide
HP Smart Array 5300 Controller User Guide 3-5
Installing the Hardware
Table 3-1: External SCSI Cables for Enclosures
Cable Type Length Option Kit Number Cable Assembly Number
VHDCI to VHDCI 1.8 m / 6 ft 341174-B21 313374-001
VHDCI to VHDCI
VHDCI to VHDCI 7.2 m / 24 ft 164604-B21 313374-004
VHDCI to VHDCI 11.7 m / 39 ft 150214-B21 313374-005
VHDCI to Wide 1.8 m / 6 ft
VHDCI to Wide 3.6 m / 12 ft 341177-B21 313375-002
Note: If additional cables are required, order by the option kit number.
3.6 m / 12 ft
341175-B21 313374-002
341176-B21 313375-001
Up to four SCSI ports may be available for connection to external storage devices
depending on whether the 2- to 4-channel adapter is attached and whether internal
drives are connected to the array controller.
1. On the rear of the server, connect the cable to the VHDCI connector on the Smart
Array controller, and then tighten the lock screws on the cable connector.
IMPORTANT: Offset VHDCI cables must be used with the Smart Array 5300 controller.
Early versions of the VHDCI cables do not accommodate side-by-side connection of the
cables to the Smart Array 5300 controller. If your storage enclosure did not include the
Offset VHDCI cables, you may need to order these. See Table 4-1 for part numbers.
NOTE: Do not use a port externally if it is already being used internally.
2. Attach the other end of the cable to the storage enclosure, and then tighten the
lock screws on the cable connector.
3. Replace the access panel and secure it with the thumbscrews, as required.
CAUTION: Do not operate the server with the access panel removed for
extended periods of time. This precaution is to protect thermally sensitive
components by ensuring the proper airflow through the server, and also to
minimize personal contact with hazardous energy levels.
3-6 HP Smart Array 5300 Controller User Guide
Loading...
+ 134 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.