IBM ServeRAID-4 Ultra160 Series User Reference page 128

12. Install the latest Windows NT 4.0 Service Pack.
You can now move the shared disk resources manually using the Microsoft Cluster
Administrator program or automatically during failover.
Creating additional ServeRAID disk resources on a Windows NT 4.0
ServeRAID cluster
You can use a ServeRAID logical disk that has not already been designated as a
cluster resource, or you can create a new array and logical disk on Server A, using
the ServeRAID Manager program. For more information about creating new arrays
and logical drives, refer to "Chapter 4. Configuring ServeRAID controllers" on
page 27.
Note: Be sure to assign a unique shared merge group number to the new shared
1. On Server A, do the following:
2. On Server B, do the following:
Perform the following operation on the cluster server that currently owns the shared
logical disk drive. The cluster server that owns the logical disk drives is the server
on which you last ran the IPSHAHTO.EXE program.
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IBM User's Reference: ServeRAID
Refer to the Microsoft Cluster Solution Administrator's Guide for more
information.
Note: If you installed Service Pack 4 or later previously, you must reinstall it
now.
logical drive.
Important
Before creating the ServeRAID logical cluster resource, you must assign a permanent
(sticky) drive letter to the shared logical drive on both servers.
When configuring a cluster, you must assign a permanent drive letter because the two
servers must have the same drive letters on each shared logical drive. If you do not assign
permanent drive letters, Windows NT might assign different drive letters on each server. You
must assign a permanent drive letter to ensure Windows NT assigns the same drive letter
to the partition on both servers.
a. Click Start in the lower-left corner of the screen; then, click Programs →
Tools → Administrative Tools → Disk Administrator. The Disk
Administrator window opens.
b. Click the partition that you want to assign a permanent drive letter.
c. Click Tools → Assign Drive Letter. The Assign drive letter window opens.
d. In the Assign drive letter pull-down menu, click the drive letter for the
partition.
e. Click OK. Windows NT permanently assigns the selected drive letter to that
partition, even if you add new partitions or rearrange your controllers.
f. To exit the Disk Administrator, click Partition → Exit.
a. Using the ServeRAID Manager program, scan for new or removed ready
drives.
b. Run IPSHAHTO.EXE program to move the newly defined logical drive to
this server.
c. Using the Windows NT Disk Administrator program, assign the same
permanent (sticky) drive letter as in step 1.
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-4 Ultra160 SCSI Controller