IBM ServeRAID-4 Ultra160 Series, User Reference, Page: 167 / 208

Solving problems in a failover environment
Use these procedures to recover from problems in a failover environment.
Recovering from a failure in a failover environment
In a failover environment, when the ServeRAID device driver is unable to send a
command to the active controller and the active controller does not respond to a
reset command, the device driver attempts to failover to the passive controller.
Note: Loose cables or defective physical drives will not cause a failover to occur.
Replacing a controller of a failover pair in a non-hot-plug PCI
slot
If a failed controller is not in a hot-plug PCI slot, replace it by doing the following:
1. Shut down the server.
2. Replace the failed controller.
Note: Do not attach the SCSI cables to the new controller.
3. 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.
4. Initialize the new controller. In the Main Tree, click the first ServeRAID
controller that you want to configure (the controller that you just inserted).
5. Click Actions
→
Restore to factory default settings.
6. If a confirmation window opens, click Yes. When the operation is complete, a
message displays at the bottom of the window indicating the restore to factory
default settings was successful.
7. Configure the new controller for failover. Click (
Configure for
clustering
) on the tool bar. The Configure controller for clustering window
opens.
8. Fill in the controller name, partner name, and SCSI initiator IDs that you used
for the controller you are replacing.
9. Click OK.
Figure 33. Configure controller for clustering window
Chapter 18. Solving ServeRAID problems
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