How to Replace a Host Adapter in a Node (Connected to a StorEdge/Netra st A1000 array)

This section describes the procedure for replacing a failed host adapter in a running node that is attached to a StorEdge/Netra st A1000 array.

In the following procedure, Node 1's host adapter on SCSI bus A needs replacement but Node 2 remains in service.

Several steps in this procedure require that you halt I/O activity. To halt I/O activity, take the array offline by using the RAID Manager GUI's manual recovery procedure in the Sun StorEdge RAID Manager User's Guide.

1. Without powering off the node, shut down Node 1.

   # scswitch -S -h nodename # shutdown -y -g0 -i0

   For the procedure on shutting down a node, see the Sun Cluster 3.0 12/01 System Administration Guide.

2. From Node 2, halt I/O activity to SCSI bus A.

   See the RAID Manager User's Guide for instructions.

3. From the array end of the SCSI cable, disconnect the SCSI bus A cable that connects the array to Node 1, then replace this cable with a differential SCSI terminator.

4. Restart I/O activity on SCSI bus A.

   See the RAID Manager User's Guide for instructions.

5. Does servicing the failed host adapter affect SCSI bus B?

   • If SCSI bus B is not affected, go to Step 9.

   • If SCSI bus B is affected, continue with Step 6.

6. From Node 2, halt I/O activity to the array on SCSI bus B.

   See the RAID Manager User's Guide for instructions.

7. From the array end of the SCSI cable, disconnect the SCSI bus B cable that connects the array to Node 1 and replace this cable with a differential SCSI terminator.

8. Restart I/O activity on SCSI bus B.

   See the RAID Manager User's Guide for instructions.

9. Power off Node 1.

10. Replace Node 1's host adapter.

    See the documentation that came with your node hardware for instructions.

11. Power on Node 1, but do not allow it to boot. If necessary, halt the array.

12. From Node 2, halt I/O activity to the array on SCSI bus A.

    See the RAID Manager User's Guide for instructions.

13. Remove the differential SCSI terminator from SCSI bus A, then reinstall the SCSI cable to connect the array to Node 1.

14. Restart I/O activity on SCSI bus A.

    See the RAID Manager User's Guide for instructions.

15. Did you install a differential SCSI terminator to SCSI bus B in Step 7?

    • If not, skip to Step 18.

    • If you did install a SCSI terminator to SCSI bus B, halt I/O activity on SCSI bus B, then continue with Step 16.

16. Remove the differential SCSI terminator from SCSI bus B, then reinstall the SCSI cable to connect the array to Node 1.

17. Restart I/O activity on SCSI bus B.

    See the RAID Manager User's Guide for instructions.

18. Bring the array back online.

    See the RAID Manager User's Guide for instructions.

19. Rebalance all logical units (LUNs).

    See the RAID Manager User's Guide for instructions.

20. Boot Node 1 into cluster mode.

    {0} ok boot