IBM Netfinity ServeRAID-4H Ultra160, User Reference

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Note: If you have the battery backup option, it will be disabled when you create
a fault-tolerant pair. The write-cache mode will automatically be changed
from write-back mode to write-through mode.
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The controllers must be configured in an active-passive mode, where all logical
drives are defined on only one controller of the pair.
Note: If both controllers have logical drives configured, the controllers will not be
configured as a fault-tolerant pair.
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Do not create hot-spare drives when creating a fault-tolerant pair. Hot-spare
drives are not supported in a failover environment except within a logical drive
with a RAID level-5E.
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A fault-tolerant pair must not contain any ready physical drives. All physical drives
must be configured in arrays.
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All logical drives must have unique shared merge-group numbers.
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When using multiple fault-tolerant pairs in a system, each set of controllers must
have a unique set of controller names and partner names.
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You cannot hot-add a backup controller to a system.
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You cannot disable an on-board ServeRAID controller, even if the controller is not
used.
Preparing the controllers
Note: The cables to the drives must not be attached when you start the server.
1. Insert the IBM ServeRAID Support CD (or the configuration CD that was
included with your server) into the CD-ROM drive; then, turn on the server.
The ServeRAID Manager program starts.
Note: If the ServeRAID Manager program opens in Configuration mode, a
window similar to the following opens. Click Cancel to go to Information
mode and continue to the next step.
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IBM
®
Netfinity
®
User’s Reference: ServeRAID
™
-4H Ultra160 SCSI Controller