Compaq Array Controller Support For IBM OS/2

There are two Compaq Array Drivers to Support Array Controllers.

The driver CPQARRAY.ADD provides support for the following Array controllers:

* Compaq RAID LC2 Controller
* Compaq Integrated Smart Array Controller
* Compaq Smart Array 322DC Controller
* Compaq Smart Array 431 Controller
* Compaq Smart Array 4250ES Controller
* Compaq Smart Array 4200 Controller
* Compaq Smart Array 221 Controller
* Compaq Smart Array 3200 Controller
* Compaq Smart Array 3100ES Controller
* Compaq SMART-2DH Array Controller
* Compaq SMART-2P Array Controller
* Compaq SMART-2SL Array Controller
* Compaq SMART-2E Array Controller
* Compaq SMART Array Controller
* Compaq 32-bit Intelligent Drive Array Controller-2 (IDA-2)
* Compaq 32-bit Intelligent Drive Array Controller (IDA)
* Compaq Intelligent Array Expansion System (IAES)

The driver CPQCISS.ADD provides support for the following CISS Array controllers:

* Compaq Smart Array 5300 Controller
* Compaq Smart Array 5i Controller
* Compaq Smart Array 532 Controller
* HP Smart Array 641 Controller
* HP Smart Array 642 Controller
Table Of Contents

1.0 Introduction
2.0 Controller Ordering
3.0 Configuration
4.0 Partitioning
5.0 Installing OS/2 to an IDA or SMART Drive
6.0 Booting from IDA or SMART Controllers
7.0 Command Line Switches
8.0 Hot-plug and Online Redundancy
9.0 Troubleshooting

1.0

Introduction

This document contains information on the use of the CPQARRAY.ADD driver,and
CPQCISS.ADD driver for IBM OS/2 as published by IBM Corporation. For the purposes
of this README file any reference to OS/2 will refer to: OS/2 Flavors The CPQARRAY.ADD
driver supports the Compaq SCSI Managed Array Technology (SMART-2 & SMART)
Controllers, the Compaq 32-bit Intelligent Drive Array (IDA-2 & IDA), and the
Compaq Intelligent Array Expansion System (IAES). The CPQCISS.ADD driver supports the
Compaq Smart Array 5300 Controller, Compaq Smart Array 5I Controller and Compaq Smart
Array 532 Controller only. Do not use the older DISK01.SYS driver with these types of drives.

2.0

Controller Ordering

See here for Configuring Controller Order. The following set of rules must be followed for
the driver to function properly with other storage controllers configured in the system

NOTE

: The Compaq System Configuration Utility does NOT automatically enforce
these rules. Follow them carefully when configuring the system.

1. If booting from a Compaq drive array controller, then the corresponding Compaq Array
driver CPQARRAY.ADD or CPQCISS.ADD entry must be present in the CONFIG.SYS.

2. The Compaq IAES Controller is not a bootable device and therefore cannot be the primary
or boot controller. The system must boot from the Compaq SMART or IDA Controller (controller
order = First).

3. If an IDA or IDA-2 controller is installed on the system, references to the IBM1S506.ADD
and/or CPQEIDE.ADD must be deleted in CONFIG.SYS.

3.0

Configuration

The SCSI drives on Compaq Storage Systems need to be configured as Drive Arrays and RAID
(Redundant Array of Inexpensive/Independent Disks) volumes.

4.0

Partitioning

See Partitioning Information

5.0

Installing IBM OS/2 on a Smart or IDA Drive

If you use SmartStart (highly recommended), all required drivers will be automatically copied.
Otherwise, please follow these steps:

1. Before starting to install, you must ensure that the Compaq Array driver CPQARRAY.ADD
or CPQCISS.ADD is present in the Installation Diskette-1 of your OS/2 installation diskettes.
You can use the Installation Procedure to add the driver.

2. Boot from the OS/2 diskette labeled Installation Diskette, and follow the procedures
for an OS/2 installation.

6.0

Booting IBM OS/2 from SMART or IDA Controllers

This section describes additional information on booting a system from a Compaq SMART
or IDA Controller. The Compaq Array driver must always be present when booting from a
Compaq SMART or IDA Controller (the Compaq IAES is not a bootable device). If a SMART
or IDA Controller is the primary disk controller, edit the CONFIG.SYS file and make sure
the "BASEDEV=CPQARRAY.ADD" or "BASEDEV=CPQCISS.ADD" entry in the file is
the first BASEDEV ADD entry present. This will guarantee that the CPQARRAY.ADD or
CPQCISS.ADD driver will be the first ADD driver loaded and thus cause OS/2 to assign
the first hard drive on the first SMART or IDA Controller as the boot drive. For example:

BASEDEV=CPQARRAY.ADD or BASEDEV=CPQCISS.ADD
BASEDEV=CPQFCAL.ADD

If OS/2 will be booting from another controller, order the other controller first.
For example:

BASEDEV=CPQ53CX.ADD
BASEDEV=CPQARRAY.ADD or BASEDEV=CPQCISS.ADD

Remove all IDE or ESDI (ST-506) disk drivers from the CONFIG.SYS if you
are using a Compaq IDA or IDA-2 controller. Ensure that the
BASEDEV=IBM1S506.ADD" or "BASEDEV=CPQEIDE.ADD" line is deleted.

7.0

Command Line Switches

These switches provide certain features that can be used for specific purposes as described below.

The /PERF:[memory blocks]

switch

This command line switch is a non-standard switch implemented for the CPQARRAY.ADD.
It should be used to modify the performance characteristics of the driver when using
SMART controllers. Under heavy disk utilization, this command switch will allow greater
performance based on the number associated with the [memory blocks] parameter. The
larger the [memory blocks] parameter the better the performance under heavy disk
utilization. Be aware that when you increase this parameter, the CPQARRAY.ADD driver
will use more memory.

Syntax : BASEDEV=CPQARRAY.ADD /PERF:[memory blocks]

[memory blocks]

A number in the range of 3 to 9 indicating the amount of
memory blocks allocated per SMART controller in the system. The driver runs at a default
value of 5. To determine the amount of memory being used you can use this formula:
Number of SMART controllers * [memory blocks] * 64kb

Example :

BASEDEV=CPQARRAY.ADD /PERF:6
The /V Switch:

The Verbose mode command line switch is a standard command line switch, which
causes the driver to print information to the screen when it loads. The driver will identify
itself along with the current revision. Then information concerning the adapters and the
drives attached to them will be provided. Adapter information includes IRQ, slot number,
and controller order number. Drive information includes physical and logical drive count.

Syntax :

BASEDEV=CPQARRAY.ADD /V
The /A:[adapter index] [unit parameters] switch :

This is a standard command line switch, which will determine the relation between the driver
and the adapters. [adapter index] The adapter index is a number used to identify a controller.
The index is based on '0' for the lowest controller order number associated with the adapter
controlled by this ADD. The index is incremented by one for each controller in the system as
you move up the controller configuration order.

Example:

A system that has three adapters, that are controlled by the Compaq Array driver, with the
lowest configured adapter being the secondary controller.

Controller Order Adapter Index
2 0
3 1
5 2

[unit parameters] This ADD only supports the /I parameter which will ignore a controller.
The following unit parameter is available:

/I Ignore the specified adapter; do not control the adapter with this driver. This parameter
prevents the ADD driver from recognizing the specified adapter. Use this parameter when you
intend to allow another driver to control a specific adapter. Warning! Be careful not to
ignore the primary controller or boot controller, because this would cause the system to be
unable to boot.
Example:
You are running NetWare on your OS/2 system and you want a NetWare NLM to control adapter 2
instead of the ADD driver. The following statement would prevent the ADD driver from claiming adapter 2.

BASEDEV=CPQARRAY.ADD /A:2 /I

The /R:[PrimarySlot],[SecondarySlot]; Switch:

This option is used to configure a duplex pair for controller redundancy. The PrimarySlot
parameter specifies the active/primary controller and the SecondarySlot parameter specifies
the inactive/redundant controller. This option should always end with a semicolon.
Example:
BASEDEV=CPQARRAY.ADD /R:2,3;
This specifies that, the controller on slot 2 is primary and the controller on slot 3 is redundant.
BASEDEV=CPQARRAY.ADD /R:2,3;6,5;

More than one duplex pair can be configured, by specifying primary and secondary slot numbers
separated by a semicolon, as shown above. Here, controllers on slot 2 and 3 form a duplex
pair and controllers on slot 6 and 5 form the second duplex pair.

NOTE: This is valid only for the CPQARRAY.ADD driver.

The /SW:[days] Switch:

This switch is used in conjunction with /R option. This option enables switch over to the
secondary/redundant controller every specified days. This is to ensure that the secondary
controller is healthy. If this option is not specified, the switch over to the redundant
controller will be disabled.
Example: BASEDEV=CPQARRAY.ADD /R:2,3; /SW:1 This indicates that the controller
switchover from active to redundant takes place every 24 hours to ensure that the back-up
controller is healthy.
NOTE: This is valid only for the CPQARRAY.ADD driver.

8.0

Hot-plug and Online Redundancy

The driver supports PCI Array Controllers present in Hot plug slots of a system.

Hot replacement is supported for the following controllers :
* Compaq RAID LC2 Controller
* Compaq Smart Array 431 Controller
* Compaq Smart Array 4250ES Controller
* Compaq Smart Array 4200 Controller
* Compaq Smart Array 221 Controller
* Compaq Smart Array 3200 Controller
* Compaq Smart Array 3100ES Array Controller
* Compaq SMART-2DH Array Controller
* Compaq SMART-2P Array Controller
* Compaq SMART-2SL Array Controller

The driver also supports Online making/dissolving of redundant back-up pair of similar
controllers present in the system. To make a redundant back-up pair, one controller should be
a standalone controller and the other should be an offline controller.

To support the Hot plug feature, it is necessary to have installed the following drivers :
* Compaq 32-bit Helper Driver for OS/2 (CPQB32.SYS v3.20 or later)

9.0

Troubleshooting

* The driver MUST be loaded by a BASEDEV= statement in the CONFIG.SYS file. This
statement is automatically inserted by the Installation procedure.

* The driver CPQARRAY.ADD v3.40 and later take 2-3 minutes to load if the array
controllers are configured as duplex pairs using the command line option (/R).

* You should use the latest firmware for your SMART Array controllers. This can
be checked by using the Version Control feature in Compaq Insight Manager.

* If you are using the SMART controller, please be sure you have version 2.04 or
later of the SMART controller firmware. This version of firmware can be found on the Compaq
Options ROMPAQ Diskette version 2.08 or later. This revision of the firmware fixes a possible
data loss problem associated with warm booting your system.

* The driver requires the Compaq BIOS-32 helper driver (CPQB32.SYS) in the system
Configuration to support the Integrated Management Log on the Compaq ProLiant servers that
have this feature. Please refer to Installation of CPQB32 for
installing Compaq 32 - Bit helper driver. Please edit the HPFS386.ini file in the IBM386FS
directory, if you are using any HPFS drive and if you have system RAM greater than 64 MegaBytes,
to add the following entry : MAXHEAP=8192

Note :

The statement 'BASEDEV=CPQB32.SYS' MUST be present in CONFIG.SYS for making use
of the Integrated Management Log.

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Copyright 1998, 2003 Hewlett-Packard Development Company, L.P.

* OS/2 is a registered trademark of the IBM Corporation.
Other product names mentioned herein may be trademarks or registered trademarks
of their respective companies.