HP D5970A - NetServer - LCII Operator's manual

HP NetRAID Series
Installation and Configuration Guide
for HP NetRAID, HP NetRAID-1, and
HP NetRAID-3Si
HP Part Number 5967-2395
Printed in April 1998

ii
Notice
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this
material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Hewlett-Packard shall
not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software
on equipment that is not furnished by Hewlett-Packard.
This document contains proprietary information that is protected by copyright.
All rights are reserved. No part of this document may be photocopied,
reproduced, or translated to another language without the prior written consent of
Hewlett-Packard Company.
Novell NetWare®is a registered trademark of Novell, Inc. Windows NT®is a
registered trademark of Microsoft Corporation. SCO®UNIX®and UnixWare®
are the registered trademarks of The Santa Cruz Operation, Inc. Banyan®and
VINES®are the registered trademarks of Banyan Systems Incorporated. OS/2®is
a registered trademark of the International Business Machines Corporation.
Hewlett-Packard Company
Network Server Division
Technical Marketing / MS 49EU-FQ
5301 Stevens Creek Boulevard
P.O. Box 58059
Santa Clara, CA 95052-8059 USA
© Copyright 1998, Hewlett-Packard Company.
Audience Assumptions
This Installation and Configuration Guide is for the person who installs,
administers, and troubleshoots LAN servers. Hewlett-Packard Company assumes
you are qualified in the servicing of computer equipment and trained in
recognizing hazards in products with hazardous energy levels.

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Contents
1 Introduction..................................................................................................1
HP NetRAID Series Adapters.........................................................................1
Features of the HP NetRAID Series Adapters ................................................2
Channels and Devices...............................................................................2
Adapter Hardware and Battery-backed Cache............................................5
SCSI Termination and Firmware................................................................6
New Features of HP NetRAID Series Adapters ..........................................7
Physical Disk Roaming and Data Migration................................................8
Fault-Tolerance and Management Features...............................................8
Changing Capacity and RAID Levels .........................................................9
About This Guide...........................................................................................9
Other Information Sources...........................................................................10
Tools You May Need....................................................................................10
2 RAID Overview ...........................................................................................13
RAID Overview............................................................................................13
Physical Drive..........................................................................................13
Arrays......................................................................................................13
Hot Spare ................................................................................................14
Logical Drive............................................................................................14
Understanding RAID Levels.........................................................................15
Arrays with No Redundancy: RAID Level 0..............................................16
Non-spanned Arrays with Redundancy: RAID Levels 1, 3, and 5..............17
Spanned Arrays: RAID Levels 10, 30, and 50 ..........................................20
3 Installation and Configuration Overview..................................................27
4 Planning .....................................................................................................29
Overview.....................................................................................................29
Step A. Plan Your Hardware ........................................................................29
Gather Information...................................................................................29
Sample Worksheet A...............................................................................30
Multiple Adapters.....................................................................................31
Slot Selection and Boot Order..................................................................31
Channels .................................................................................................32
Step B. Plan Arrays and Logical Drives........................................................33

Contents
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Automatic Configuration...........................................................................33
Custom Configuration..............................................................................34
5 Installation and Configuration ..................................................................43
Overview.....................................................................................................43
Step C. Prepare the Adapter........................................................................43
If the Adapter is Too Long........................................................................43
Install Additional Memory.........................................................................44
Connect Battery Backup Unit...................................................................45
Step D. Install the Adapter...........................................................................48
Turn Off the HP NetServer and Remove Cover.......................................48
Install the Adapter....................................................................................49
Step E. Install Cables and Set SCSI ID Switches.........................................50
Connect Cables and Set SCSI ID Switches..............................................50
Replace Cover.........................................................................................52
Step F. Boot HP NetServer Navigator to Launch HP NetRAID Assistant......52
Boot HP NetServer Navigator CD-ROM...................................................52
Boot Messages ........................................................................................52
Select Configure Disk Array.....................................................................53
Step G. Configure Arrays and Logical Drives...............................................53
HP NetRAID Assistant .............................................................................53
Select Adapter to Configure.....................................................................55
Clear Configuration..................................................................................56
Check Rebuild Rate.................................................................................56
Assign Global Hot Spares........................................................................56
Select Wizard..........................................................................................57
Define Physical Arrays and Dedicated Hot Spares...................................58
Define Logical Drives...............................................................................61
Preview Configuration..............................................................................64
Step H. Save Configuration and Initialize.....................................................66
Save to Binary File ..................................................................................66
Print Configuration...................................................................................67
Configure Any Other Adapters.................................................................67
Initialize Logical Drives............................................................................67
Exit HP NetRAID Assistant ......................................................................68
6 HP NetRAID Series Software .....................................................................69
Overview.....................................................................................................69
Step I. Decide Which HP NetRAID Drivers You Need..................................69

Contents
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Step J. Use the HP NetServer Navigator CD-ROM to Prepare Disks............70
Check Latest Versions .............................................................................70
Create Drivers Diskette and Instructions ..................................................71
Make NOS-specific Configuration Utility Diskette.....................................71
Print the Network Operating System Instructions......................................72
Step K. Install NOS and HP NetRAID Drivers ..............................................73
Install Network Operating System (if necessary)......................................73
Uninstall the Old Drivers (if necessary)....................................................73
Install HP NetRAID Series Driver.............................................................73
Step L. Install NOS-specific Configuration Utility..........................................74
Step M. Run Configuration Utilities ..............................................................76
Run HP NetRAID Express Tools..............................................................76
Run the EISA Configuration Utility (ECU) from HP NetServer Navigator
CD-ROM..................................................................................................79
Run the Setup Utility................................................................................80
7 Preparing for Online Capacity Expansion................................................81
Step N. Prepare for Online Capacity Expansion...........................................81
Online Capacity Expansion Under Novell NetWare......................................82
Theory of Operation.................................................................................82
Preparing for Online Capacity Expansion.................................................84
Setting Up Your Array for Capacity Expansion.........................................84
Online Capacity Expansion Under Windows NT...........................................87
Theory of Operation.................................................................................87
Setting Up Your Array for Capacity Expansion.........................................89
8 Upgrading to an HP NetRAID-3Si Adapter................................................93
Back Up Your Data......................................................................................93
Load the Appropriate NetRAID Driver ..........................................................93
Insert the HP NetRAID-3Si Adapter and Recreate the Configuration............94
9 Managing Servers Over the Network ........................................................97
Adapter Management...................................................................................97
Features ..................................................................................................97
NOS Requirements..................................................................................98
Other Requirements.................................................................................99
Understanding HP NetRAID Network Utilities...............................................99
Determine Where to Install HP NetRAID Assistant.................................100
Identify the Registration Server/Client....................................................100

Contents
vi
HP NetRAID Network Utilities to Install..................................................100
Make the Installation Disk if Necessary.....................................................102
Microsoft Windows NT Client or Server Installation Instructions................102
Run Setup..............................................................................................103
Follow On-screen Instructions for Windows............................................103
Edit the regserv.dat and hosts Files.......................................................104
Finishing Up...........................................................................................105
Novell NetWare Server Installation Instructions ........................................105
Banyan VINES Server Installation Instructions..........................................106
Install the Access Service Utility ............................................................107
Install the HP NetRAID Assistant and Registration Server Utilities .........107
Using HP NetRAID Assistant to Manage Servers......................................109
Before Starting HP NetRAID Assistant...................................................109
Start HP NetRAID Assistant...................................................................109
Select Another Server-Adapter Pair.......................................................111
Exit HP NetRAID Assistant ....................................................................111
10 Understanding HP NetRAID Utilities......................................................113
HP NetRAID Assistant...............................................................................113
HP NetRAID Assistant Menus................................................................114
HP NetRAID Config ..................................................................................115
HP NetRAID Config Menus....................................................................116
HP NetRAID Express Tools.......................................................................117
HP NetRAID Express Tools Menus........................................................118
11 Troubleshooting......................................................................................119
Power-up (Boot) Error Messages...............................................................119
Other BIOS Error Messages......................................................................122
Other Troubleshooting ..............................................................................123
Troubleshooting Management Over the Network.......................................125
Common Problems................................................................................126
12 Warranty and Support.............................................................................127
Hardware Warranty...................................................................................127
Obtaining HP Repair and Telephone Support............................................127
Glossary .......................................................................................................129
Disk Array Terms and Technologies..........................................................129
A Adapter Specifications............................................................................137

Contents
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HP NetRAID-3Si Specifications.................................................................137
HP NetRAID and HP NetRAID-1 Specifications ........................................138
B Regulatory Information...........................................................................139
Notice for USA..........................................................................................139
FCC Radio Frequency Emissions Statements........................................139
Statement Required for European Union:..................................................139
Declaration of Conformity......................................................................140
C Worksheets..............................................................................................141
Configuration Worksheets.........................................................................141
Sample Configuration Worksheet..............................................................144
Physical Arrays and Hot Spares.............................................................146
Logical Drives........................................................................................146
D Cabling Diagrams....................................................................................147
Cables Required .......................................................................................147
Setting SCSI IDs.......................................................................................148
HP NetServer E40 and E45 ......................................................................149
HP NetServer LC II...................................................................................150
Duplex, Disk Array.................................................................................150
Default Switch Settings..........................................................................150
Sample Alternate Switch Settings..........................................................151
Mass Storage Cables.............................................................................151
HP NetServer LD Pro................................................................................152
Duplex Cabling......................................................................................152
Default Switch Settings..........................................................................152
Mass Storage Cables.............................................................................153
HP NetServer LH Pro and LH II ................................................................154
Non-Duplex Cabling...............................................................................154
Duplex Cabling......................................................................................155
Default Switch Settings..........................................................................156
Mass Storage Cables.............................................................................156
HP NetServer LX Pro................................................................................157
Non-Duplex, Disk Array..........................................................................157
Mass Storage Cables.............................................................................158
Default Switch Settings..........................................................................158
HP NetServer LXe Pro..............................................................................159
Non-Duplex, Disk Array..........................................................................159

Contents
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Mass Storage Cables.............................................................................160
Default Switch Settings..........................................................................160
HP NetServer LXr Pro...............................................................................161
Non-duplex Cabling to Single-Bus HP NetServer Rack Storage/8..........161
Duplex Cabling to Dual-Bus HP NetServer Rack Storage/8 ...................162
Mass Storage Cables.............................................................................162
HP NetServer LXr Pro8.............................................................................163
Non-duplex Cabling to Single-Bus HP NetServer Rack Storage/8..........163
Cabling Two HP NetRAID Channels to a Dual-Bus HP NetServer Rack
Storage/8...............................................................................................164
Mass Storage Cables.............................................................................164
Index.............................................................................................................165

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1 Introduction
HP NetRAID Series Adapters
The HP NetRAID (HP D4943A), HP NetRAID-1 (HP D4992A), and
HP NetRAID-3Si (D5955A) adapters provide an interface between the host
system and a disk array storage system. The adapters use the PCI (Peripheral
Component Interconnect) standard to control data transfers on one to three SCSI
channels.
The HP NetRAID Series adapters support the operating systems listed below, for
which drivers are provided.
Network Operating
System All HP NetRAID Series Adapters HP NetRAID and HP NetRAID-1 adapters only
Microsoft Windows NT 4.0 X
Microsoft Windows NT 3.51 X
Novell NetWare 3.12, 4.11,
4.11 SMP, and SFTIII 4.11 X
SCO UNIX Open Server 5.0.x X
SCO UNIX ODT 3.0 and
MPX 3.0 X
SCO UnixWare 2.1.x X
IBM OS/2 Warp Server SMP
4.0 X
Banyan VINES 6.x and 7.x X

Chapter 1 Introduction
2
Features of the HP NetRAID Series Adapters
The HP NetRAID, HP NetRAID-1 and HP NetRAID-3Si adapters are high-
performance, intelligent PCI-to-SCSI host adapters with RAID control
capabilities. The HP NetRAID Series adapters have SCSI channels with both
internal and external connections.
Channels and Devices
HP NetRAID Series adapters support channels with both internal and external
connections. For each channel, you can have either one internal, or one external
connection.
HP NetRAID-3Si
The HP NetRAID-3Si adapter has three channels with both internal and external
connections. Both internal and external connections support:
•Fast/Wide SCSI (at data transfer rates of up to 20 MB/sec per channel)
•Ultra/Wide SCSI (at data transfer rates of up to 40 MB/sec per channel)
Internal connections also support:
•Ultra2 SCSI (at data transfer rates of up to 80 MB/sec per channel)
The HP NetRAID-3Si adapter supports a maximum of six to eight devices per
channel depending on the HP system and enclosure used.
HP NetRAID-3Si Devices Per Channel
Channel Maximum Internal
Connections Maximum External Connections*
066 or 8
166 or 8
266 or 8
* External storage with the HP Storage System/6 supports a maximum of six Fast/Wide
SCSI devices, while external storage with the HP Rack Storage/8 supports a maximum of
eight Fast/Wide or Ultra/Wide SCSI devices.

Chapter 1 Introduction
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HP NetRAID-3Si External SCSI Cables
Channel External SCSI Cable
0D6020A(1)
1D3637C or D6020A
2D6020A(1)
(1) External connections to both Channel 0 and Channel 2 at the same time require two
D6020A SCSI Cables. The connectors for Channels 0 and 2 are very close together, and
these cables have offset connectors that allow them to fit side-by-side.
If the necessary cables were not supplied with your system, see HP's Order
Assistant for ordering information. Order Assistant is available on the Internet at
http://www.hp.com/go/netserver.
HP NetRAID
The HP NetRAID adapter supports three channels. It has three connectors for
internal SCSI devices and two connectors for external SCSI devices for Channels
0 and 1. Optionally, you can connect an external port to Channel 2. (See
Chapter 4, "Planning," for instructions.)
Both internal and external connections support:
•Fast/Wide SCSI (at data transfer rates of up to 20 MB/sec per channel)
•Ultra/Wide SCSI (at data transfer rates of up to 40 MB/sec per channel)
The HP NetRAID adapter supports a maximum of six to eight devices per
channel depending on the HP system and enclosure used.

Chapter 1 Introduction
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HP NetRAID Devices Per Channel
Channel Internal Connection External Connection*
066 or 8
166 or 8
26**
* External storage with the HP Storage System/6 supports a maximum of six Fast/Wide
SCSI devices, while external storage with the HP Rack Storage/8 supports a maximum of
eight Fast/Wide or Ultra/Wide SCSI devices.
** The HP NetRAID adapter does not have an external connection for Channel 2. To
connect external devices to an HP NetRAID adapter's internal port, use the D4983A cable
kit.
HP NetRAID External SCSI Cables
Channel External SCSI Cable
0D3637C or D6020A
1D3637C or D6020A
2Internal connector can be cabled
to an optional added external port
If the necessary cables are not supplied with your system, see HP's Order
Assistant for ordering information. Order Assistant is available on the Internet at
http://www.hp.com/go/netserver
HP NetRAID-1
The HP NetRAID-1 adapter supports one SCSI channel and has both an internal
and an external connector.
Both internal and external connections support:
•Fast/Wide SCSI (at data transfer rates of up to 20 MB/sec per channel)
•Ultra/Wide SCSI (at data transfer rates of up to 40 MB/sec per channel)
The HP NetRAID-1 adapter supports a maximum of six to eight devices
depending on the HP system and enclosure used.

Chapter 1 Introduction
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HP NetRAID-1 Devices Per Channel
Channel Internal Connection External Connection *
066 or 8
* External storage with the HP Storage System/6 supports a maximum of six Fast/Wide
SCSI devices, while external storage with the HP Rack Storage/8 supports a maximum of
eight Fast/Wide or Ultra/Wide SCSI devices.
HP NetRAID-1 External SCSI Cable
Channel External SCSI Cable
0D3637C or D6020A
If the necessary cable is not supplied with your system, see HP's Order Assistant
for ordering information. Order Assistant is available on the Internet at
http://www.hp.com/go/netserver
Adapter Hardware and Battery-backed Cache
IOP: The IOP (I/O Processor) for the HP NetRAID and HP NetRAID-1 adapters
is the 32-bit Intel i960CA RISC processor running at 33 MHz. The IOP for the
HP NetRAID-3Si adapter is the 32-bit Intel i960RD Intelligent I/O RISC
processor running at 66 MHz. The processor directs all functions of the adapter,
including command processing, PCI and SCSI bus transfers, RAID processing,
drive rebuilding, cache management, and error recovery.
ASIC: A custom ASIC (Application Specific Integrated Circuit) provides PCI
bus mastering with a burst data transfer rate of 132 MB/sec. The ASIC handles
data transfer between the PCI bus, the cache, and the SCSI bus. This ASIC
supports memory write and invalidate commands on the PCI bus. It also performs
RAID mirroring, parity generation, and checking in RAID levels 1, 3, 5, 10, 30,
and 50.
Cache: All HP NetRAID Series adapters have cache memory.
•For the HP NetRAID adapter, cache memory resides in a 4 MB battery-
backed 60-ns FPM (Fast-Page Mode) DRAM SIMM. You can replace the
this SIMM with a 16 MB DRAM SIMM and add one additional 16 MB
DRAM SIMM to provide 32 MB of cache memory.
•For the HP NetRAID-3Si adapter, cache memory resides in a 16 MB
battery-backed 60-ns EDO (Extended Data Output) DRAM SIMM.

Chapter 1 Introduction
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•For the HP NetRAID-1 adapter, cache memory resides in a 4 MB non-
battery-backed 60-ns FPM DRAM SIMM and cannot be upgraded.
NOTE The HP NetRAID-1 adapter does not have a Battery Backup
Unit.
The HP NetRAID Series adapters support Direct and Cached I/O and Write
Through or Write Back caching, which can be selected for each logical drive. To
improve performance in sequential disk accesses, the HP NetRAID Series
adapters use Adaptive Read Ahead caching by default, but it can be disabled to
Normal or set to simple Read Ahead caching.
Alarm: The HP NetRAID Series adapter’s onboard tone generator provides
audible warnings (alarms) when RAID system errors occur.
SCSI Termination and Firmware
Termination: Active termination on the SCSI bus conforms to Alternative 2 of
the SCSI-2 specifications. Termination enable/disable is automatic through cable
detection. It can be modified by the user in Step M in Chapter 6.
Firmware: The HP NetRAID Series firmware handles all RAID and SCSI
command processing and also supports the following functions:
•Disconnect/Reconnect feature optimizes SCSI Bus seek.
•Tagged Command Queuing allows multiple commands to be sent to the
controller, thus improving random access.
•Scatter/Gather supports multiple address/count pairs.
•Multi-threading supports up to 255 simultaneous commands with elevator
sorting and concatenation of requests per SCSI channel.
•Stripe size for each logical drive can be set from 4 KB to 128 KB. A stripe
size of 128 KB requires at least 8 MB of memory.
•Multiple rebuilds and consistency checks have user-definable priority.

Chapter 1 Introduction
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New Features of HP NetRAID Series Adapters
New features of HP NetRAID Series adapters include:
•Enhanced Array Spanning
•Enhanced Configuration Replication
•Support for Clustering
•I2O Support (HP NetRAID-3Si adapters only)
Enhanced Array Spanning
The HP NetRAID Series adapters allow up to four arrays to be spanned together
as one logical drive, rather than the two-array maximum supported previously.
For example, HP NetRAID Series adapters can support a RAID 10 logical drive
with up to eight physical disks. HP NetRAID and HP NetRAID-3Si adapters
using all three channels can group up to 18 to 24 physical disks in a RAID 30 or
RAID 50 logical drive depending on the HP system and enclosure used.
Enhanced Configuration Replication in HP NetRAID Assistant Utility
When you save a configuration using the HP NetRAID Assistant utility, HP
NetRAID Series adapters now save both logical drive and adapter configuration
settings. (Adapter settings include such parameters as the Rebuild Rate, Power
Fail Safeguard, and Auto Rebuild.)
NOTE The HP NetRAID Config and HP NetRAID Express Tools
utilities save logical drive settings only and do not save
adapter settings.
Support for Clustering
The HP NetRAID Series adapters can be used with HP NetServer clusters. HP
NetServer clusters provide reliable, increased-availability solutions for
applications where unplanned downtime is unacceptable. In all HP NetServer
configurations, both cluster nodes share the drives located in the external shared
storage cabinets using an HP NetRAID Series adapter located in each HP
NetServer node. For complete information on clustering, visit the HP NetServer
Clustering Solutions web site at
http://www.hp.com/netserver/products/

Chapter 1 Introduction
8
I2O Support (HP NetRAID-3Si Adapters Only)
HP NetRAID-3Si adapters support I2O (Intelligent Input/Output) with some
operating systems. For a complete list of operating systems for which HP
NetRAID I2O drivers are available, see the HP web site at
www.hp.com/go/netserver
Physical Disk Roaming and Data Migration
HP NetRAID Series adapters allow physical disk roaming, in which the adapter
keeps track of disk modules if they are moved to different slots in the hot swap
cages, as long as the slots are all controlled by the same adapter.
HP NetRAID Series adapters allow disk modules to be moved to different HP
NetRAID Series adapters. HP NetRAID Series adapters can be swapped without
losing data readability.
Fault-Tolerance and Management Features
Fault-Tolerance features include the following:
•Automatic failed-drive detection with Autorebuild (automatic rebuild with
a hot spare or when a drive is replaced)
•Manual hot swap replacement
•Battery-backed cache memory
Management features include the following:
•Monitoring of adapter configuration, data parity consistency, and SNMP
error messages
•Rapid online configuration change and capacity expansion without the
need to first back up all data, reconfigure the array, and reload the data

Chapter 1 Introduction
9
Changing Capacity and RAID Levels
HP NetRAID Series adapters can expand capacity and change RAID levels of
logical drives without powering down the server.
•Online Capacity Expansion: You can add a physical drive to a RAID 0,
3, or 5 logical drive. This can be an online operation if you are running
Microsoft Windows NT or Novell NetWare; otherwise, capacity expansion
is an offline operation only. (Preparations for capacity expansion must be
made, as described in Chapter 6, "Preparing for Online Capacity
Expansion.")
•Online Capacity Reduction: You can remove a physical drive from a
RAID 1, 3, or 5 logical drive as part of an online operation.
•Online Changes to RAID Levels: You can convert a RAID 1, 3, or 5
logical drive to RAID 0.
NOTE You cannot perform online conversions of logical drives that
span arrays (RAID level 10, 30, or 50).
About This Guide
This guide is intended to be used together with the HP NetRAID Series
Installation Road Map. This guide provides detailed explanations of instructions
found in the road map.
This HP NetRAID Series Installation and Configuration Guide will help you
install your HP NetRAID, HP NetRAID-1, or HP NetRAID-3Si adapter, and plan
the configuration. It guides you through power-up, launching the HP NetServer
Navigator software, making the initial configuration of the adapter, and
installing a NOS-specific configuration utility. It contains a glossary, and its
appendices contain sample cabling diagrams and worksheets to use in planning
the configuration of physical and logical drives.
Fill in the worksheets in Appendix C as you read this guide and make your
configuration decisions. The worksheets contain the information you need to
enter into the HP NetRAID Assistant configuration utility launched by HP
Navigator. The pencil icon in the margin is a reminder to log your configuration
choices on the worksheets.
!

Chapter 1 Introduction
10
The HP NetRAID Series Installation and Configuration Guide is intended to be
used in conjunction with your HP NetServer documentation. Refer to your system
documentation for details such as cable product numbers and I/O slot boot order.
If you are setting up your HP NetServer for the first time, begin with the
HP NetServer Installation Road Map that came with your system. Return to this
guide when the roadmap instructs you to install additional I/O cards and to
configure the mass storage subsystem.
Other Information Sources
Disk array administration and management are beyond the scope of this
document. Refer to the HP NetRAID Series User Guide in Information Assistant
on the HP NetServer Navigator CD-ROM. Access it, and other material in
Information Assistant, either by booting your system from the HP NetServer
Navigator CD-ROM, or by installing Information Assistant onto any Microsoft
Windows-based PC.
You should also consult the following HP NetServer documentation:
•Readme file for your HP NetServer on the HP NetServer Navigator
CD-ROM
•Your HP NetServer Installation Road Map
•Your HP NetServer System User Guide
•Technical Reference Cards or labels on the HP NetServer system chassis
(for cables and SCSI ID switch settings)
•Internet site: http://www.hp.com/go/netserver
Tools You May Need
Please refer to the HP NetServer System User Guide for the tools needed to open
the chassis. Usually a flat 1/4-inch screwdriver and a T15 TORXTM driver is
required. You will also find a flashlight and a small metal pin, such as a
straightened paper clip, helpful for setting SCSI ID switches. An antistatic kit
(3M®8501/8502/8505 or equivalent) is strongly recommended.

Chapter 1 Introduction
11
CAUTION All HP NetRAID adapter cards are sensitive to static
electricity and can easily be damaged by improper handling.
Using a grounding strap is recommended. Read the following
information carefully before you handle the accessory:
•Leave the adapter card in the antistatic bag until you are
ready to install it.
•If possible, use an antistatic wrist strap and grounding
mat.
•Before you remove the adapter card from the bag, touch a
grounded, unpainted metal surface on the system to
discharge static electricity.