Solving Problems In A Failover Environment; Recovering From A Failure In A Failover Environment; Replacing A Controller Of A Failover Pair In Non-Hot-Plug Pci Slot - IBM Netfinity ServeRAID-4H Ultra160 User Reference

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 non-hot-plug PCI slot

If a failed controller is not in a hot-plug PCI slot, do the following to replace it:
Figure 30. Configure controller for clustering window
10. Shut down the server.
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IBM Netfinity User's Reference: ServeRAID
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.
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 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.
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-4H Ultra160 SCSI Controller
on the tool bar. The