How to Remove a Sun StorEdge T3 Disk Array

Use this procedure to permanently remove a Sun StorEdge T3 disk array and its submirrors from a running cluster. This procedure provides the flexibility to remove the host adapters from the nodes for the Sun StorEdge T3 disk array you want to remove.

This procedure defines Node A as the node you want to begin working with, and Node B as the remaining node.

During this procedure, you will lose access to the data that resides on the Sun StorEdge T3 disk array you want to remove.

1. If necessary, back up all database tables, data services, and volumes associated with the Sun StorEdge T3 disk array you want to remove.

2. Detach the submirrors from the Sun StorEdge T3 disk array you want to remove to stop all I/O activity to the Sun StorEdge T3 disk array.

   For more information, see your Solstice DiskSuite or VERITAS Volume Manager documentation.

3. Run the appropriate Solstice DiskSuite or VERITAS Volume Manager commands to remove the references to the LUN(s) from any diskset or disk group.

   For more information, see your Solstice DiskSuite or VERITAS Volume Manager documentation.

4. Determine the resource groups and device groups running on Node B.

   # scstat

5. Move all resource groups and device groups off Node A.

   # scswitch -S -h nodename

6. Stop the Sun Cluster software on Node A, and shut down Node A.

   # shutdown -y -g0 -i0

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

7. Is the Sun StorEdge T3 disk array you want to remove the last Sun StorEdge T3 disk array connected to Node A?

   • If yes, disconnect the fiber optic cable between Node A and the Sun StorEdge FC-100 hub connected to this Sun StorEdge T3 disk tray, and then disconnect the fiber optic cable between the Sun StorEdge FC-100 hub and this Sun StorEdge T3 disk array.

   • If no, proceed to Step 8.

   For the procedure on removing a fiber optic cable, see the Sun StorEdge T3 Configuration Guide.

8. Do you want to remove the host adapter from Node A?

   • If yes, power off Node A.

   • If no, skip to Step 10.

9. Remove the host adapter from Node A.

   For the procedure on removing host adapters, see the documentation that shipped with your nodes.

10. Without allowing the node to boot, power on Node A.

    For more information, see the Sun Cluster 3.0 System Administration Guide.

11. Boot Node A into cluster mode.

    {0} ok boot

12. Move all resource groups and device groups off Node B.

    # scswitch -S -h nodename

13. Stop the Sun Cluster software on Node B, and shut down Node B.

    # shutdown -y -g0 -i0

14. Is the Sun StorEdge T3 disk array you want to remove the last Sun StorEdge T3 disk array connected to the Sun StorEdge FC-100 hub.

    • If yes, disconnect the fiber optic cable connecting this Sun StorEdge FC-100 hub and Node B.

    • If no, proceed to Step 15.

    For the procedure on removing a fiber optic cable, see the Sun StorEdge T3 Configuration Guide.

15. Do you want to remove the host adapter from Node B?

    • If yes, power off Node B.

    • If no, skip to Step 18.

16. Remove the host adapter from Node B.

    For the procedure on removing host adapters, see the documentation that shipped with your nodes.

17. Without allowing the node to boot, power on Node B.

    For more information, see the Sun Cluster 3.0 System Administration Guide.

18. Boot Node B into cluster mode.

    {0} ok boot

    For more information, see the Sun Cluster 3.0 System Administration Guide.

19. On all cluster nodes, update the /devices and /dev entries.

    # devfsadm -C # scdidadm -C

20. Return the resource groups and device groups you identified in Step 4 to Node A and Node B.

    # scswitch -z -g resource-group -h nodename # scswitch -z -D device-group-name -h nodename