test

Sun Cluster 3.0 Hardware Guide

How to Replace a Host Adapter

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

Several steps in this procedure require that you stop I/O activity. To stop I/O activity, take the controller offline using the RAID Manager 6.x graphical user interface's manual recovery procedure in Sun StorEdge RAID Manager User's Guide.

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

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

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

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

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

  5. Determine if you need to stop I/O activity to SCSI bus B.

    If servicing of the failed host adapter will affect SCSI bus B, from node 1, stop I/O activity to the StorEdge A3500 controller on SCSI bus B. Otherwise, skip to Step 8.

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

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

  8. Power off node 1.

  9. Replace node 1's host adapter.

  10. Without booting the node, power on node 1.

  11. From node 2, stop I/O activity to the StorEdge A3500 controller on SCSI bus A.

  12. Remove the differential SCSI terminator from SCSI bus A, and reinstall the SCSI cable to connect the StorEdge A3500 controller to node 1.

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

  14. Stop I/O activity on SCSI bus B.

  15. Determine if you need to remove the differential SCSI terminator from SCSI bus B, and reinstall the SCSI cable to connect node 1 and StorEdge A3500 controller.

    If, in Step 6, you disconnected the SCSI bus B cable that connects the StorEdge A3500 to node 1 and replaced the cable with a differential SCSI terminator, replace the differential SCSI terminator with the SCSI cable. Otherwise, skip to Step 18.

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

  17. Rebalance all logical unit numbers (LUN).

  18. Boot node 1 into cluster mode.


    # boot