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Sun Cluster 3.0 U1 Hardware Guide

How to Replace a Host Adapter in a Node (Connected to a StorEdge A3500 System)

Note -

This section describes the procedure for replacing a failed host adapter in a running node that is attached to a StorEdge A3500 SCSI-based system. For the same procedure for a cluster node that is attached to an A3500FC system, see "How to Replace a Host Adapter in a Node (Connected to a StorEdge A3500FC System)".

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

Note -

Several steps in this procedure require that you halt I/O activity. To halt I/O activity, take the controller module 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 U1 System Administration Guide.

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

    See the Sun StorEdge RAID Manager User's Guide for instructions.

  3. From the controller module end of the SCSI cable, disconnect the SCSI bus A cable that connects the StorEdge A3500 controller module to node 1, then replace this cable with a differential SCSI terminator.

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

    See the Sun StorEdge 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 StorEdge A3500 controller module on SCSI bus B.

    See the Sun StorEdge RAID Manager User's Guide for instructions.

  7. From the controller module end of the SCSI cable, disconnect the SCSI bus B cable that connects the StorEdge A3500 controller module to node 1 and replace this cable with a differential SCSI terminator.

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

    See the Sun StorEdge 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 system.

  12. From node 2, halt I/O activity to the StorEdge A3500 controller module on SCSI bus A.

    See the Sun StorEdge 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 StorEdge A3500 controller module to node 1.

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

    See the Sun StorEdge 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 StorEdge A3500 controller module to node 1.

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

    See the Sun StorEdge RAID Manager User's Guide for instructions.

  18. Bring the StorEdge A3500 controller module back online.

    See the Sun StorEdge RAID Manager User's Guide for instructions.

  19. Rebalance all logical unit numbers (LUNs).

    See the Sun StorEdge RAID Manager User's Guide for instructions.

  20. Boot node 1 into cluster mode.


    {0} ok boot