Compaq 219700-001 - ProLiant - 1500 User manual

ONLINE STORAGE
CONTROLLER RECOVERY
OPTION
USER GUIDE

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U
Writer: Ginny Green Project: OSCRO Title & Notice Pages Comments: 295586-001
File Name:OSTINO1.DOC Last Saved On:9/1/97 2:14 PM
Online Storage Controller
Recovery Option
User Guide
First Edition (September 1997)
Part Number 295586-001
Compaq Computer Corporation

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Writer: Ginny Green Project: OSCRO Title & Notice Pages Comments: 295586-001
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Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ
COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR
STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST
INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
1997 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
This publication does not constitute an endorsement of the product or products that were tested. The
configuration or configurations tested or described may or may not be the only available solution. This
test is not a determination of product quality or correctness, nor does it ensure compliance with any
federal, state, or local requirements. Compaq does not warrant products other than its own strictly as
stated in Compaq product warranties.
Compaq, SMART-2, ProLiant, and NetFlex are registered with the United States Patent and Trademark
Office.
Netelligent and ProSignia are trademarks and/or service marks of Compaq Computer Corporation.
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.
Online Storage Controller Recovery Option User Guide
First Edition (September 1997)
Part Number 295586-001

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Online Storage Controller Recovery Option User Guide
Writer: Ginny Green Project: OSCRO Table of Contents Comments: 295586-001
File Name:OSTOC2.DOC Last Saved On:9/23/97 2:56 PM
Contents
How To Use This Guide
How this Guide is Arranged.......................................................................................... vii
Symbols In Text............................................................................................................ viii
Symbols in Equipment ....................................................................................................ix
Getting Help ....................................................................................................................xi
Telephone Numbers .................................................................................................xi
Compaq Web Site.................................................................................................. xiii
Chapter 1
Elements of the Online Storage Controller Recovery Option Solution
Hardware Requirements............................................................................................... 1-1
Software Requirements ................................................................................................ 1-2
Kit Contents.................................................................................................................. 1-3
Chapter 2
Functionality and Configuration Options
Redundancy at the Mass Storage Controller Level...................................................... 2-1
Merging two SMART-2 Controllers into a Controlled Pair ........................................ 2-2
Configuration Options.................................................................................................. 2-4
Single-Channel Configuration .............................................................................. 2-6
Dual-Channel Configuration................................................................................. 2-8
Multiple Controller Pairs....................................................................................... 2-9
Internal vs. External Boot Device....................................................................... 2-10

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Chapter 3
Planning and Installing the Online Storage Controller Recovery Option
Hardware Planning....................................................................................................... 3-1
Controllers for OSCRO Implementation .............................................................. 3-1
Dual-Channel Configuration Considerations........................................................ 3-2
Knockout Panels.................................................................................................... 3-2
OSCRO Planning Implications..................................................................................... 3-3
Potential Impact on Unattended Reboot ............................................................... 3-4
Boot Device Configuration Planning.................................................................... 3-4
Array Acceleration Disabled................................................................................. 3-5
Recovery Server Option Incompatibility.............................................................. 3-5
Setting Up for OSCRO Installation.............................................................................. 3-5
Installing the Recovery Server Switch in the ProLiant Storage System/F or /U.. 3-6
Upgrading the SMART-2 Array Controller Firmware ......................................... 3-9
Updating the SMART-2 Array Controller Device Drivers................................. 3-10
Loading the Compaq SSD for Windows NT ...................................................... 3-10
Installation.................................................................................................................. 3-13
Installing the Controllers..................................................................................... 3-14
Labeling the Cables............................................................................................. 3-15
Connecting the Cables......................................................................................... 3-16
Merging Two Controllers into a Controller Pair................................................. 3-20
Testing and Verifying the Installation........................................................................ 3-22
Chapter 4
Compaq Online Storage Controller Recovery Utility
Major Functions............................................................................................................ 4-1
Right-Click Functionality............................................................................................. 4-2
Mass Storage Controller Icons ..................................................................................... 4-3
Viewing Device Properties........................................................................................... 4-6
Setting Machine Options............................................................................................ 4-10

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Chapter 5
Troubleshooting
Controllers Must Be Matched ......................................................................................5-1
Planning for OSCRO when RSO is in Use .................................................................. 5-1
Incorrect Cabling.......................................................................................................... 5-1
Cross Connection .................................................................................................. 5-2
Unilateral Connection ........................................................................................... 5-4
Mismatched Controller Pairs................................................................................. 5-6
Clearing a Cable Check Error....................................................................................... 5-7
Verify Does Not Switch Back...................................................................................... 5-7
Wrong Device Driver ................................................................................................... 5-7
Controller Not Seen on the Online Storage Controller Recovery Utility .................... 5-7
Boot Device Considerations......................................................................................... 5-8
Chapter 6
Recovering from Mass Storage Controller Failure
Recovering from Mass Storage Controller Failure Using PCI Hot Plug
Technology................................................................................................................... 6-1
Recovering from Mass Storage Controller Failure Without PCI Hot Plug
Technology................................................................................................................... 6-3
Boot Device Considerations......................................................................................... 6-3
Chapter 7
Dissolving a Controller Pair.........................................................................7-1
Appendix A
Electrostatic Discharge
Preventing Electrostatic Damage ............................................................................... A-1
Grounding Methods.................................................................................................... A-1

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Appendix B
Regulatory Compliance Notices
Class A Equipment......................................................................................................B-1
Modifications........................................................................................................B-1
Cables...................................................................................................................B-1
Canadian Notice (Avis Canadien)...............................................................................B-1
Class A Equipment...............................................................................................B-1
European Union Notice................................................................................................B-2
Japanese Notice ...........................................................................................................B-3
Australian Notice.........................................................................................................B-3
Appendix C
Building Diskettes from the SmartStart and Support Software CD
Building Diskettes for the SMART-2 Array Controller Firmware Upgrade..............C-1
Building Diskettes for the Compaq System Configuration Utility
version 2.36 rev. A ......................................................................................................C-4
Index

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Online Storage Controller Recovery Option User Guide
Writer: Ginny Green Project: How To Use This Guide Comments: 295586-001
File Name:OSABTHG3.DOC Last Saved On:9/23/97 11:09 AM
How To Use This Guide
This guide provides procedures for configuring, installing, maintaining, and
supporting the Online Storage Controller Recovery Option (OSCRO). It is
designed to be a reference for implementing and troubleshooting OSCRO
configurations. The other high-availability options in the Recovery Server
Option/F kit, Standby Recovery Server and On-Line Recovery Server, are covered
in the Recovery Server Option User Guide (part number 213818-004), which is
also in the kit.
How this Guide is Arranged
The manual is divided into the following chapters:
■ Chapter 1 - Elements of the Online Storage Controller Recovery
Option Solution
This section covers the hardware and software requirements of the
Online Storage Controller Recovery Option and provides a breakdown
of the contents of the kit.
■ Chapter 2 - Functionality and Configuration Options
This section describes the basic functionality and benefits of OSCRO
and details configuration options.
■ Chapter 3 - Planning and Installing the Online Storage Controller
Recovery Option
This section provides step-by-step instructions for planning and
installing OSCRO.
■ Chapter 4 - Compaq Online Storage Recovery Utility
This section describes the use of the Compaq Online Storage Controller
Recovery Utility.
■ Chapter 5 - Troubleshooting
This section describes error conditions and incorrect configurations of
OSCRO.
■ Chapter 6 - Recovery from Mass Storage Controller Failure
This section details recovery procedures to be used when a mass storage
controller fails under OSCRO.
■ Chapter 7 - Dissolving a Controller Pair
This section explains how and when to dissolve a controller pair.

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■ Appendixes include important information related to electrostatic
discharge, regulatory compliance notices, and how to build diskettes
from the SmartStart and Support Software CD.
Symbols In Text
WARNING: Text set off in this manner indicates that failure to follow
directions in the warning can result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow
directions can result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting
points of information.

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Text Conventions
Convention Use
Keys Keys appear in boldface. A plus sign (+)
between two keys indicates that they
should be pressed simultaneously.
USER INPUT User input appears in a different typeface
and in uppercase
FILENAMES File names appear in uppercase italics
Menu Options, Command Names,
Dialog Box Names These appear in initial capital letters
COMMANDS, DIRECTORY NAMES,
and DRIVE NAMES These always appear in uppercase
Type When you are instructed to type
information, type the information without
pressing the Enter key
Enter When you are instructed to enter
information, type the information and
then press the Enter key

Symbols in Equipment
WARNING: Any surface or area of the equipment marked with
these symbols indicates the presence of a hot surface or hot
component. If this surface is contacted, the potential for injury
exists. To reduce the risk of injury from a hot component, allow the
surface to cool before touching.

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xHow To Use This Guide
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WARNING: Any surface or area of the equipment marked with
these symbols indicates the presence of electrical shock hazards.
Enclosed area contains no operator-serviceable parts. To reduce
the risk of injury from electrical shock hazards, do not open this
enclosure.
WARNING: Any RJ-45 receptacle marked with these symbols
indicates a Network Interface Connection. To reduce the risk of
electrical shock, fire, or damage to the equipment, do not plug
telephones or telecommunications connectors into this receptacle.
WARNING: Some products are equipped with a three-wire, electrical
grounding-type plug that has a third pin for grounding. This plug only fits
into a grounded electrical outlet. This is a safety feature. Do not defeat the
safety purpose of the grounding-type plug by trying to insert it into a non-
grounded outlet. If you cannot insert the plug into the outlet, contact your
electrician to replace the obsolete outlet.

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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.
Telephone Numbers
Contact your nearest Compaq Authorized Reseller or Service Provider for more
information.
■ For the name of your nearest Compaq Authorized Reseller:
❏ In the United States, call 1-800-345-1518
❏ In Canada, call 1-800-263-5868
■ For Compaq technical support:
❏ In the United States and Canada, call 1-800-386-2172
❏ Elsewhere, call one of the numbers listed below
Compaq Worldwide Technical Support Telephone Numbers
Location Voice FAX
A
PD 65-7503030 65-7504909
A
rgentina 54-1 313 3100 54-1 313 3100 Ext 21
A
ustralia 61-2-9911-1955 61-2-9911-1900
A
ustria 0222-87816-16 0222-87816-82
Bahrain 973-210-214
Belgium (02) 716-96-96 (02) 725-22-13
Brazil 55 11 5505-3600 55 11 5505-3922 Ext 4336
Canada 1-800-386-2172
Caribbean 1-800-345-1518
Central America 713-378-2206
Continued

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Compaq Worldwide Technical Support Telephone Numbers
Continued
Location Voice FAX
Chile 562-274-3007
China 86-10-834-6721 86-10-834-6713
Colombia 571-345-0266 571-312-0157
Czech Republic 42-2-232-8772 42-2-232-8773
Denmark 45-90-4545 45-90-4595
Ecuador 593-2504540
Europe/Middle East/Africa (49) 089-9933-2891
Finland 9800-206-720
(358-800-1-206720) 90-6155-9899 (358-0-61559899
France (33 1) 41-33-4455 (33 1) 41-33-4263
Germany 0180-5-212111 089-9933-3399
Hong Kong 852-90116633 852-28671734
Hungary 36-1-201-8776 36-1-201-9696
India (91-80) 559-6023
Italy 392-57-90300 392-575-00686
Japan 0120-101589 81 3-5402-5959
Korea 82-2-523-3575 82-2-3471-0321
Malaysia [phone]
Mexico [phone] [phone]
Netherlands 06-91681616 06-8991116
New Zealand 649-307-3969
Norway 22-072-020 22-072-021
Poland 48-2-630-3535 48-2-630-3553
Portugal 351-1-4120132 351-1-4120654
Singapore 65-7503030 65-7504909
South Africa 27-11-728-6999 27-11-728-3335
Spain 341-640-1302 341-640-0124
Sweden (46) 8 703 5240 (46) 8 703 5222
Switzerland 411 838 410/2222 01-837-0969
Taiwan (886) 2-3761170 (886) 2-7322660
Thailand 62-2-679-6222 62-2-679-6220
United Kingdom 44-81-332-3888 44-81-332-3409
United States 1-800-386-2172 1-800-345-1518
Venezuela (582) 953.69.44 (582) 952.86.70

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Compaq Web Site
The Compaq Web site has information on this product as well as the latest
drivers and Flash ROM images. You can access the Compaq Web site by
logging on to the Internet at http://www.compaq.com.
OSCRO Suggestions and Comments
For suggestions and comments about OSCRO, please send e-mail to:
[email protected]
using OSCRO in the Subject line.
We regret we are unable to respond individually to e-mail suggestions.
Please do not send support questions to this address.

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1-1
Online Storage Controller Recovery Option User Guide
Writer: Ginny Green Project: Elements of the Online Storage Recovery Option Solution Comments: 295586-001
File Name:OSCHP1-4.DOC Last Saved On:9/23/97 12:36 PM
Chapter 1
Elements of the Online Storage
Controller Recovery Option
Solution
The Online Storage Controller Recovery Option (OSCRO), which is a part of
the Recovery Server Option kit, includes hardware and software elements, and
requires careful configuration and setup. You must understand what can and
cannot be done with existing hardware and the other options in the Recovery
Server Option /U kit.
There are three high-availability option solutions in the Recovery Server
Option /U kit. They are:
■ Standby Recovery Server
■ On-Line Recovery Server
■ Online Storage Controller Recovery Option
If you want to install either the Standby Recovery Server or the On-Line
Recovery Server option, please direct your attention to the Recovery Server
Option User Guide (part number 213818-004).
Hardware Requirements
The following hardware components are required for OSCRO:
■ Compaq ProLiant or ProSignia server
■ For some server models, a knockout panel
■ Two Compaq SMART-2 Array Controllers of the same type
■ Compaq ProLiant Storage System(s)/F or /U
■ Fast-Wide SCSI cables (either 6 or 12 feet in length) to connect
SMART-2 controllers to the ProLiant Storage System(s)/F or /U
■ Recovery Server Switch

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1-2 Elements of the Online Storage Recovery Option Solution
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NOTE: OSCRO is supported for the single bus versions of the ProLiant Storage
System/F and /U units, in both the tower and rack-mount configurations. Older
ProLiant Storage Systems and duplex versions of the ProLiant Storage System are
not supported by OSCRO. The ProLiant Storage System/F and /U units that are and
are not supported are pictured in Figure 1-1.
US Part Number 146700
189600
197100
Intl. Part Number 146750
189640
197150
US Part Number 272800
272900
304100-B21
304110-B21
Intl. Part Number 272804
272904
304104-B31
304114-B31
Not
Supported
Figure 1-1. Compaq ProLiant Storage Systems
Software Requirements
OSCRO is supported only under Windows NT 4.0.
All software required to implement OSCRO is on the Compaq SmartStart and
Support Software CD included in the kit. This CD includes the Compaq Support
Software for Microsoft Windows NT (SSD) (version 2.02 or later) and updated
firmware and device drivers for the Compaq SMART-2 Array Controllers. For
instructions on how to build diskettes from the CD, see Appendix C “Building
Diskettes from the SmartStart and Support Software CD.”

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Online Storage Controller Recovery Option User Guide
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File Name:OSCHP1-4.DOC Last Saved On:9/23/97 12:36 PM
The Compaq SSD for Windows NT includes the following elements required to
implement OSCRO:
■ Compaq Online Storage Controller Recovery Utility
■ Updated Compaq SMART-2 Array Controller device driver
(CPQARRAY.SYS)
■ Compaq System Management driver (SYSMGMT.SYS)
■ Compaq Remote Monitoring service (CPQRCMC.EXE)
OSCRO also requires installation of the Remote Procedure Call (RPC)
Service, which is part of the Windows NT operating system. If OSCRO is
also to be used to manage remote servers, you need to install a routable
protocol that supports RPC (such as TCP/IP).
The ROMPaq for the SMART-2 firmware upgrade (version 1.94 or later) is
included on the SmartStart and Support Software CD in the Recovery Server
Option /U kit. It can also be found on the Compaq Web site.
Kit Contents
The Recovery Server Option /U kit (part number 304117-B21) includes
hardware and software required for implementation of OSCRO and some
additional parts (that would be used if you were installing either the Standby
Recovery Server or On-Line Recovery Server option).
Check Figure 1-2 to verify that you have all of the necessary items for OSCRO
implementation. The items in the kit that relate to OSCRO are:
■ One Recovery Server Switch (part number 007678-001)
■ One Knockout Panel Assembly (part number 189620-001)
■ One External Fast-Wide SCSI Cable (part number 189646-003)
■ Compaq SmartStart and Support Software CD (part number 196268-
001), which includes all of the software and drivers required for the
Online Storage Controller Recovery Option
■ The Online Storage Controller Recovery Option User Guide (this document)

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1-4 Elements of the Online Storage Recovery Option Solution
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File Name:OSCHP1-4.DOC Last Saved On:9/23/97 12:36 PM
The contents of the Recovery Server Option /U kit are illustrated in
Figure 1-2. When implementing OSCRO, not all of the parts in the kit will
be needed. Those that are not needed for OSCRO are shaded in the figure.
To implement OSCRO, you may also need one or more additional internal
SCSI ribbon cables (part number 199595-002). These are the original cables
that came with your SMART-2 Array Controllers. If you do not have the
correct cables and you are planning a dual-channel configuration (see
Chapter 2), you also need one or more Spares kits (part number 198639-
001). Spares kits include the required ribbon cable, screws, and screwlocks
required for OSCRO implementation.
Verify that you have all the necessary items before beginning the installation.
RSO User Guide
189646
189620
Important
Card
007678
OSCRO User Guide
213807
196268
Figure 1-2. Kit Contents (Part Number 304117-B21)
After verifying that you have all the required elements for the OSCRO
implementation you are planning, proceed to Chapter 2 to learn more about
OSCRO.

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Chapter 2
Functionality and Configuration
Options
There are three high-availability option solutions in the Recovery Server
Option /U kit:
■ Standby Recovery Server
■ On-Line Recovery Server
■ Online Storage Controller Recovery Option (OSCRO)
The first two option solutions minimize server downtime by automatically
transferring operations from a failed server to a backup server.
OSCRO, on the other hand, provides a way to reduce or eliminate downtime
associated with mass storage controller failure. In this chapter, we examine how
OSCRO provides this benefit.
Redundancy at the Mass Storage
Controller Level
In the past, the effort to improve the reliability of I/O subsystems focused on
redundant arrays of independent disks (RAID). RAID protects data if a disk
drive fails but offers no protection against mass storage controller failure.
Windows NT provides the option to implement a fully redundant I/O subsystem
in a configuration called Disk Duplexing. Disk Duplexing implemented at the
software level provides protection against failure of the disk as well as the mass
storage controller. Disk Duplexing requires complete redundancy of all I/O
subsystem components, however, which makes it very costly to implement and
limits the extensibility of the system.
With the introduction of OSCRO and its two-way switching capability,
Compaq offers fault tolerance for mass storage controllers implemented at the
hardware level, providing increased reliability without the need for complete
I/O subsystem redundancy.

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2-2 Functionality and Configuration Options
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Merging two SMART-2 Controllers
into a Controlled Pair
OSCRO allows you to merge two matched SMART-2 controllers into a
controller pair. In such a pair, one controller is active and the other remains
in standby mode. Should a problem occur with the active controller, the
SMART-2 device driver switches traffic to the standby controller without
loss of data or interruption of service (see Figure 2-1).
Figure 2-1. Online Storage Controller Recovery Option Overview
Device
Driver
Device
Driver
Active Active
Standby Failed
1
0
1
01
0
1
A controller pair
is established. If the active controller fails, the standby controller is promoted to active.