IBM ServeRAID, User Reference

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13. Click Actions → Change stripe-unit size .
14. Click the new stripe-unit size for your installation.
15. Shut down and turn off the server.
16. Reconnect the SCSI channel cables to the controller.
Note: Be sure to connect the cables to the correct SCSI channels as noted in
step 2 on page 169.
17. If the ServeRAID controller being replaced is attached to the server startup
disk array or other non-shared disk arrays, start the system with the IBM
ServeRAID Support CD (version 4.0, or later) in the CD-ROM drive. The
ServeRAID Manager program starts.
If the ServeRAID controller being replaced is not attached to any of these
items, go to step 21.
18. In the ServeRAID Manager tree, click the new controller.
19. Click Actions → Copy configuration from drives .
20. Click the merge-group number for the non-shared logical drives (that is, 206 or
207).
Note: The last number in the merge-group number is the shared SCSI initiator
ID. That is, if the merge-group number is 206, the SCSI initiator ID is 6.
21. Remove the IBM ServeRAID Support CD from the CD-ROM drive.
22. Restart your server.
Note: If the controller you replaced is the startup controller, the system will
now start the operating system properly.
Recovering from a failover in a Microsoft Cluster Server server
After a failover occurs in a Microsoft Cluster Server server, the red drive lights in
external expansion enclosures might turn on for physical drives that are online.
There is no hardware problem; the lights turn off within an hour.
Recovering from a failed physical drive in a RAID level-5E environment
If a RAID level-5E logical drive undergoes compression as the result of a failed
physical drive, the failed drive will be marked defunct hot spare (DHS). Replace the
defunct physical drive or remove the defunct drive from the enclosure as soon as
possible. If a DHS drive is present, the RAID level-5E logical drive might not
failover.
Recovering from a failed server in a ServeRAID cluster
Contact IBM technical support for assistance.
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IBM ServeRAID: User’s Reference, Version 5.10