Recovering From A Failure In A Failover-Environment; Replacing A Non-Hot-Plug Controller In A Failover Pair - IBM Netfinity ServeRAID-3H Installation And User Manual

where:
controller is the ServeRAID controller number (1–12)
channel is the channel number for the device (1, 2, or 3)
sid is the SCSI ID for the device (0–15)
After the format is complete, the ServeRAID controller will be able to recognize the drive again.

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 primary
controller and the primary controller does not respond to a reset command, the device driver attempts to
failover to the secondary controller.
Note: Loose cables or defective physical drives will not cause a failover to occur.

Replacing a non-hot-plug controller in a failover pair

If a failed controller is not in a hot-plug PCI slot, do the following to replace it:
1. Shut down the server.
2. Replace the failed controller.
3. Follow the steps to reconfigure the new controller.
To initialize the controller, do steps 5 through 7 on page 42.
To configure the controller for failover, do steps 5 through 10 on page 44.
Important
Be sure the firmware level of the new controller is the same as the controller you are replacing.
Be sure to use the same Controller Name, Partner Name, and SCSI Initiator ID for the
controller you are replacing.
If the failed controller is in a hot-plug slot, refer to the documentation that comes with the server for
instructions for replacing the controller.
Chapter 6. Solving ServeRAID problems
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