IBM Netfinity ServeRAID-3H User manual

IBM Netfinity
ServeRAID-3H and ServeRAID-3L
Ultra2 SCSI Adapters
Installation and User's Guide

IBM Netfinity
ServeRAID-3H and ServeRAID-3L
Ultra2 SCSI Adapters
Installation and User's Guide
IBM

Note
Before using this information and the product it supports, be sure to read
the general information under Appendix A, “Product Warranties and
Notices” on page 171.
First Edition (September 1998)
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 Copyright International Business Machines Corporation 1996, 1998. All rights
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Contents
About This Book ........................... vii
How This Book Is Organized ..................... vii
Notices Used in This Book ..................... viii
Chapter 1. Getting Started . . . . . . . . . . . . . . . . . . . . . 1
Option Package Contents ....................... 2
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Understanding RAID Technology ................... 5
Interleave Depth and Stripe-Unit Size .............. 5
Supported RAID Levels ...................... 6
Chapter 2. Installing and Cabling the Adapter ........ 11
Adapter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . 12
Battery Backup Cache Option .................. 14
Installing the ServeRAID Adapter ................. 15
Connecting External Devices .................... 18
Chapter 3. Using the Configuration Programs ........ 19
Using the ServeRAID Configuration Program ........... 20
Starting the Configuration Program ............... 22
Using the Configuration Mode .................. 24
Using the Information Mode ................... 30
Changing the ServeRAID Configuration Settings ....... 40
Using the Tool Bar ........................ 41
Using the Menu Bar ........................ 42
Using the ServeRAID Mini-Configuration Program ........ 51
Viewing the Controller Status .................. 52
Viewing the Configuration .................... 53
Using the Advanced Configuration Functions ......... 53
Chapter 4. Installing Device Drivers and Utility Programs . 57
IBM ServeRAID Configuration CD and Diskettes ........ 59
Administration and Monitoring Program .............. 60
Programs for Windows NT and Windows 95 ......... 61
Background-Server Components . . . . . . . . . . . . . . . . 62
Programs for OS/2 and NetWare ................ 62
 Copyright IBM Corp. 1996, 1998 iii

Programs for OpenServer and UnixWare ........... 63
Installing the ServeRAID WIN32-Based Program ........ 63
Installing ServeRAID Device Drivers ................ 65
Installing Device Drivers for Windows NT ........... 65
Installing Device Drivers for NetWare ............. 69
Installing Device Drivers for OS/2 ................ 74
Installing Device Drivers for OpenServer ............ 78
Installing Device Drivers for UnixWare ............. 82
Starting the Background-Server Components ......... 88
Using the Background-Server Components .......... 89
IPSSEND and IPSMON Programs ................. 92
Installing IPSSEND and IPSMON for OS/2, Windows NT, or
NetWare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Installing IPSSEND and IPSMON for OpenServer ...... 95
Installing IPSSEND and IPSMON for UnixWare ....... 95
Installing IPSSEND for DOS ................... 96
Chapter 5. Starting and Using the Utility Programs ..... 97
Starting the Administration and Monitoring Program ....... 98
Using the Administration and Monitoring Program ........ 100
Using the Options Pull-Down Menu ............... 100
Using the Administration Functions ............... 105
Using the Monitoring Functions ................. 121
Starting the IPSSEND Program .................. 126
Using the IPSSEND Program .................... 127
Server Roll-Out Commands ................... 127
Error-Recovery Commands . . . . . . . . . . . . . . . . . . . 130
Problem-Isolation and Debug Commands ........... 133
RAID Configuration Commands ................. 137
Starting the IPSMON Program ................... 138
Using the IPSMON Program .................... 139
Chapter 6. Solving ServeRAID Problems ........... 141
ServeRAID Adapter and Controller Messages .......... 142
ServeRAID Startup Messages .................. 142
ServeRAID POST Messages .................. 150
ServeRAID ISPR, BCS, and ECS Codes ........... 151
Rebuilding a Defunct Drive ..................... 159
Guidelines for the Rebuild Operation .............. 159
General Information about the Rebuild Operation ...... 160
iv IBM ServeRAID-3H and ServeRAID-3L Adapters

Automatically Rebuilding the Defunct Drive .......... 160
Chapter 7. Getting Help, Service, and Information ..... 161
Before You Call for Service ..................... 162
Getting Customer Support and Service .............. 162
Using Electronic Support Services ............... 162
Using the World Wide Web ................... 163
Getting Information by Fax .................... 164
Getting Help Online ........................ 164
Getting Help by Telephone .................... 165
Getting Help Around the World ................. 167
Purchasing Additional Services ................... 167
900-Number Operating System and Hardware Support Line 167
Network and Server Support Line ................ 168
Ordering Support Line Services ................. 168
Warranty and Repair Services .................. 169
Ordering Publications . . . . . . . . . . . . . . . . . . . . . . . . 170
Appendix A. Product Warranties and Notices ........ 171
Warranty Statements . . . . . . . . . . . . . . . . . . . . . . . . . 171
IBM Statement of Limited Warranty for United States, Puerto
Rico, and Canada (Part 1 - General Terms) ......... 171
IBM Statement of Warranty Worldwide except Canada,
Puerto Rico, Turkey, United States (Part 1 - General Terms) 175
Part 2 - Worldwide Country-Unique Terms .......... 178
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Year 2000 Readiness and Instructions ............. 183
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
United Kingdom Telecommunications Safety Requirements . 185
European Community Directive Conformance Statement .. 186
Industry Canada Class A Emission Compliance Statement . 186
Australia and New Zealand Class A Statement ........ 186
Taiwanese Electromagnetic Interference (EMI) Statement . 187
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Contents v

vi IBM ServeRAID-3H and ServeRAID-3L Adapters

About This Book
This book provides the information needed to install and configure an
IBM ServeRAID-3H Ultra2 SCSI Adapter or an IBM ServeRAID-3L
Ultra2 SCSI Adapter. You also can use the configuration and
reference information in this book to configure the IBM ServeRAID
controllers provided on some IBM Netfinity and PC Server system
boards.
How This Book Is Organized
Chapter 1, “Getting Started,” contains introductory information about
the IBM ServeRAID-3H and ServeRAID-3L adapters, a content listing
for the adapter option packages, an installation overview, and
general information about RAID technology.
Chapter 2, “Installing and Cabling the Adapter,” provides information
about the standard features of the ServeRAID-3H and ServeRAID-3L
adapters, and instructions for installing and cabling the adapters.
Chapter 3, “Using the Configuration Programs,” explains how to use
the IBM ServeRAID Configuration Program and the IBM ServeRAID
Mini-Configuration Program. You can refer to the information in this
chapter when configuring one or more devices attached to a
ServeRAID adapter or controller.
Chapter 4, “Installing Device Drivers and Utility Programs,” contains
the instructions needed to install the ServeRAID device drivers and
programs provided on the IBM ServeRAID Configuration CD and
diskettes that came with the ServeRAID adapters.
Chapter 5, “Starting and Using the Utility Programs,” contains
instructions for starting and using the ServeRAID Administration and
Monitoring, IPSSEND, and IPSMON programs. You can use these
operating-system specific programs to maintain and monitor your
ServeRAID subsystem.
 Copyright IBM Corp. 1996, 1998 vii

Chapter 6, “Solving ServeRAID Problems,” describes the ServeRAID
POST error codes and startup messages. This chapter also includes
some basic information about rebuilding a defunct drive.
Chapter 7, “Getting Help, Service, and Information,” provides
information about accessing the IBM Bulletin Boards, HelpCenter,
and World Wide Web sites to obtain future code and information
updates for the ServeRAID adapters and controllers.
Appendix A, “Product Warranties and Notices,” contains warranty
information, product notices, and trademarks.
Notices Used in This Book
This book contains notices to highlight information as follows:
Notes:
These notices provide important tips, guidance, or advice.
Attention:
These notices indicate possible damage to programs, devices, or
data. An attention notice is placed just before the instruction or
situation in which damage could occur.
viii IBM ServeRAID-3H and ServeRAID-3L Adapters

Chapter 1. Getting Started
This book provides the information needed to install and configure an
IBM ServeRAID-3H Ultra2 SCSI Adapter or an IBM ServeRAID-3L
Ultra2 SCSI Adapter. These high-performance, redundant array of
independent disk (RAID) adapters are ideally suited for data-storage
environments that require superior performance, flexibility, and
reliable data storage. (See “Adapter Features” on page 12 for more
information.)
You also can use the configuration and reference information in this
book to configure the IBM ServeRAID controllers provided on some
IBM Netfinity and PC Server system boards.
This chapter contains:
Option Package Contents ....................... 2
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Understanding RAID Technology ................... 5
Interleave Depth and Stripe-Unit Size .............. 5
Supported RAID Levels ...................... 6
RAID Level-0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RAID Level-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Enhanced RAID Level-1 ..................... 9
RAID Level-5 . . . . . . . . . . . . . . . . . . . . . . . . . . 10
 Copyright IBM Corp. 1996, 1998 1

Option Package Contents
In addition to this book, the ServeRAID option package contains:
IBM Netfinity ServeRAID-3L Ultra2 SCSI Adapter or
IBM Netfinity ServeRAID-3H Ultra2 SCSI Adapter
Attention:
Do not open the static-protective bag containing the adapter until
you are instructed to do so.
IBM ServeRAID Support Package:
– IBM ServeRAID Configuration CD
– IBM ServeRAID Device Driver Diskette
– IBM ServeRAID Device Drivers for SCO Operating Systems
Diskette
See Chapter 4, “Installing Device Drivers and Utility Programs”
on page 57 for more detailed information.
DASD Status Cable (for use with the PC Server 330)
IBM ServeRAID Channel 3 Cable option kit
This cable comes with the ServeRAID-3H adapter only. You can
attach this cable to the ServeRAID-3H adapter to convert the
internal SCSI channel connector to an external connector. See
“ServeRAID-3H Adapter” on page 13 for more information.
Contact your place of purchase if any items are missing or damaged.
2IBM ServeRAID-3H and ServeRAID-3L Adapters

Installation Overview
This book contains reference, installation, configuration, and
administration information for the IBM ServeRAID-3H adapter,
ServeRAID-3L adapter, and ServeRAID controllers. In addition to
this book, you might need to refer to your IBM server documentation
for Safety information, connector locations, and for adapter and hard
disk drive installation instructions.
The information that you will need to install or configure your IBM
ServeRAID subsystem depends on the type of ServeRAID adapter or
controller you are using and your familiarity with RAID technology.
A typical installation and configuration of an IBM ServeRAID
subsystem consists of the following steps:
1Learn about RAID technology.
The “Understanding RAID Technology” section in this chapter
contains general information about RAID technology. If you
already are familiar with the IBM implementation of RAID
technology, you might want to start your installation with step 2.
2Install the ServeRAID-3H or ServeRAID-3L adapter.
Chapter 2, “Installing and Cabling the Adapter” provides
information about the standard features of the ServeRAID-3H
and ServeRAID-3L adapters, and installation and cabling
instructions for the adapters. You will not need the information
in this chapter if you are using a ServeRAID controller on an
IBM Netfinity or PC Server system board.
3Use the ServeRAID Configuration Programs to configure your
disk arrays.
Chapter 3, “Using the Configuration Programs” explains how to
use the IBM ServeRAID Configuration Program and the IBM
ServeRAID Mini-Configuration Program. You can refer to the
information in this chapter or the online information in the
configuration program when configuring one or more devices
attached to a ServeRAID adapter or controller.
Chapter 1. Getting Started 3

Attention:
The default setting for the stripe-unit size is 8 KB1. If you want
to use a different setting, be sure to change the stripe-unit size
before you store data in the logical drives. After you store data
in the drives, you cannot change the stripe-unit size without
destroying data in the logical drives. (See “Interleave Depth
and Stripe-Unit Size” on page 5 and page 46 for more
information.)
If you are configuring a ServeRAID-3H Ultra2 SCSI Adapter
or a ServeRAID-3L Ultra2 SCSI Adapter, see Chapter 3,
“Using the Configuration Programs” on page 19 for
instructions.
If you are configuring an IBM ServeRAID controller that
came as a standard feature on an IBM Netfinity or PC
Server system board, see the installation instructions and
CDs provided with your server for information about starting
the configuration programs for the server.
4Install your operating system, ServeRAID device drivers, and
ServeRAID utility programs.
You can skip this step if you are installing multiple ServeRAID
adapters and you already installed your operating system and
the most current versions of the ServeRAID device drivers and
utility programs.
To install these files for a ServeRAID-3H Ultra2 SCSI
Adapter or a ServeRAID-3L Ultra2 SCSI Adapter, see the
information provided with your operating system and
Chapter 4, “Installing Device Drivers and Utility Programs”
on page 57 for instructions.
To install these files for an IBM ServeRAID controller that
came as a standard feature on an IBM Netfinity or PC
Server system board, see the installation instructions and
CDs provided with your server for instructions.
1KB equals approximately 1000 bytes.
4IBM ServeRAID-3H and ServeRAID-3L Adapters

After you install the device drivers and utility programs, refer to
Chapter 5, “Starting and Using the Utility Programs” on
page 97.
Understanding RAID Technology
RAID is the technology of grouping several hard disk drives in a
computer into an array that you can define as one or more logical
drives. Each logical drive appears to the operating system as a
single drive. This grouping technique greatly enhances logical-drive
capacity and performance beyond the physical limitations of a single
hard disk drive.
When you group multiple physical hard disk drives into a logical
drive, the ServeRAID controller can transfer data in parallel from the
multiple drives in the array. This parallel transfer yields data-transfer
rates that are many times higher than with nonarrayed drives. This
increased speed makes the system better able to meet the
throughput (the amount of work in a given amount of time) or
productivity needs of the multiple-user network environment.
The ability to respond to multiple data requests provides not only an
impressive increase in throughput, but also a decrease in response
time. The combination of parallel transfers and simultaneous
responses to multiple requests allows disk arrays to provide a high
level of performance in network environments.
Interleave Depth and Stripe-Unit Size
With RAID technology, data is striped across an array of hard disk
drives. This data-distribution scheme complements the way the
operating system requests data.
The granularity at which data from one file is stored on one drive of
the array before subsequent data is stored on the next drive of the
array is called the interleave depth.
You can control the interleave depth and maximize the performance
of your ServeRAID controller by setting a stripe-unit size that is close
Chapter 1. Getting Started 5

to the size of the system I/O requests. You can set the stripe-unit
size to 8 KB, 16 KB, 32 KB, or 64 KB. For example, performance
in transaction-based environments, which typically involve large
blocks of data, might be optimal when the stripe-unit size is set to 32
KB or 64 KB; however, performance in file and print environments,
which typically involve multiple small blocks of data, might be optimal
when the stripe-unit size is set to 8 KB or 16 KB.
The collection, in logical order of these stripe units, from the first
drive of the array to the last drive of the array, is called a stripe.
(See page 46 for more information.)
Supported RAID Levels
Disk arrays are used to improve performance and reliability. The
amount of improvement depends on the application programs that
you run on the server and the RAID levels that you assign to the
logical drives.
The ServeRAID adapters and controllers support RAID level-0, RAID
level-1, Enhanced RAID level-1, and RAID level-5.
RAID Level-0
RAID level-0 stripes the data across all the drives in the array. This
offers substantial speed enhancement, but provides for no data
redundancy. RAID level-0 provides the largest capacity of the RAID
levels offered, because no room is taken up for redundant data or
data-parity storage.
6IBM ServeRAID-3H and ServeRAID-3L Adapters

The following illustration shows data arranged in an array of three
hard disk drives defined as one RAID level-0 logical drive. Notice
that the data is striped across all the drives in the array, but no
copies of the data or parity information is stored.
A hard disk failure within the array results in loss of data in the
logical drive assigned RAID level-0, but only in that logical drive .If
you have logical drives assigned RAID level-1 or level-5 in the same
array, they will not lose data.
Note: The ServeRAID controller automatically assigns RAID level-0
to all logical drives in an array containing only one hard disk
drive.
When you replace a failed drive, the ServeRAID controller can
rebuild all the RAID level-1 and RAID level-5 logical drives
automatically onto the replacement hard disk drive. However, any
data stored in a failed RAID level-0 logical drive is lost.
Though the risk of data loss is present, you might want to assign
RAID level-0 to one of the logical drives to take advantage of the
speed offered with this RAID level. You could use this logical drive
to enter data that you back up each day and for which safety is not
of primary importance, that is, data that you can re-create easily.
You also might want to use a RAID level-0 logical drive when the
work you are doing requires maximum capacity.
......
Stripe 1 Block 1 Block 2 Block 3
Stripe 2 Block 4 Block 5 Block 6
Stripe 3 Block 7 Block 8 Block 9
Chapter 1. Getting Started 7

RAID Level-1
RAID level-1 provides 100% data redundancy and requires two hard
disk drives. With RAID level-1, the first half of a stripe is the original
data; the second half of a stripe is a mirror (copy) of the data, but
written to another drive.
Because the data is mirrored, the capacity of the logical drive when
assigned RAID level-1 is 50% of the physical capacity of the two
hard disk drives in the array.
The following illustration shows data arranged in an array of two hard
disk drives defined as one RAID level-1 logical drive. Notice that the
data on Drive B is a mirror copy of the data on Drive A.
If one of the hard disk drives fails, the ServeRAID controller switches
read and write requests to the remaining functional drive in the array.
Drive A
..
Drive B
..
Data Stripe 1 Block 1 Mirror Stripe 1 Block 1
Data Stripe 2 Block 2 Mirror Stripe 2 Block 2
Data Stripe 3 Block 3 Mirror Stripe 3 Block 3
8IBM ServeRAID-3H and ServeRAID-3L Adapters

Enhanced RAID Level-1
When you group more than two physical drives into an array and you
select RAID level-1, the ServeRAID controller automatically assigns
the IBM Enhanced RAID level-1 to the array.
The Enhanced RAID level-1 combines mirroring with data striping.
This RAID level stripes data and copies of the data across all the
drives in the array. As with the standard RAID level-1, the data is
mirrored, and the capacity of the logical drive is 50% of the physical
capacity of the grouping of hard disk drives in the array.
The Enhanced RAID level-1 requires a minimum of three drives and,
depending upon the stripe-unit size, supports a maximum of eight or
16 drives.
The following illustration shows data arranged in an array with three
hard disk drives. The logical drive is assigned the Enhanced RAID
level-1. Notice that the first stripe is the data stripe and the second
stripe is the mirror (copy) of the first data stripe, but shifted one
drive.
......
Data Stripe 1 Block 1 Block 2 Block 3
Mirror Stripe 1 Block 3 Block 1 Block 2
Data Stripe 2 Block 4 Block 5 Block 6
Mirror Stripe 2 Block 6 Block 4 Block 5
Chapter 1. Getting Started 9

RAID Level-5
RAID level-5 requires a minimum of three hard disk drives. This
RAID level stripes data and parity across all drives in the array.
When an array is assigned RAID level-5, the capacity of the logical
drive is reduced by one drive (for data-parity storage).
RAID level-5 is generally the most desirable choice, because it offers
both data protection and increased throughput. RAID level-5 gives
you higher capacity than RAID level-1, but RAID level-1 offers better
performance.
The following illustration shows data arranged in an array with three
hard disk drives. The logical drive is assigned RAID level-5. Notice
that the storage of the data parity also is striped, and it shifts from
drive to drive.
......
Stripe 1 Block 1 Block 2 Parity 1+2
Stripe 2 Block 3 Parity 3+4 Block 4
Stripe 3 Parity 5+6 Block 5 Block 6
Stripe 4 Block 7 Block 8 Parity 7+8
10 IBM ServeRAID-3H and ServeRAID-3L Adapters