How to Remove a Single-Controller Configuration

Use this procedure to permanently remove a storage array from a running cluster. This storage array resides in a single-controller configuration. This procedure provides the flexibility to remove the host adapters from the nodes for the storage array that you are removing.

This procedure defines Node A as the node with which you begin working. Node B is another node in the cluster.

During this procedure, you lose access to the data that resides on the storage array that you are removing.

Steps

1. Back up all database tables, data services, and volumes that are associated with the storage array that you are removing.

2. Detach the submirrors from the storage array that you are removing. Detach the submirrors to stop all I/O activity to the storage array.

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

3. Remove the references to the LUN(s) from any diskset or disk group.

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

4. Determine the resource groups and device groups that are running on Node A.

   # scstat

5. Shut down Node A.

   For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

6. Is the storage array that you are removing the last storage array that is connected to Node A?

   • If yes, disconnect the fiber-optic cable between Node A and the FC switch that is connected to this storage array. Afterward, disconnect the fiber-optic cable between the FC switch and this storage array.

   • If no, proceed to Step 7.

   For the procedure about how to remove a fiber-optic cable, see the Sun StorEdge 6020 and 6120 Array System Manual.

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

   • If yes, power off Node A.

   • If no, skip to Step 10.

8. Remove the host adapter from Node A.

   For the procedure about how to remove host adapters, see the documentation that shipped with your nodes.

9. Without enabling the node to boot, power on Node A.

   For more information, see your Sun Cluster system administration documentation.

10. Boot Node A into cluster mode.

    For the procedure about how to boot nodes, see your Sun Cluster system administration documentation.

11. Shut down Node B.

    For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

12. Is the storage array that you are removing the last storage array that is connected to the FC switch?

    • If yes, disconnect the fiber-optic cable that connects this FC switch and Node B.

    • If no, proceed to Step 13.

    For the procedure about how to remove a fiber-optic cable, see the Sun StorEdge 6020 and 6120 Array System Manual.

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

    • If yes, power off Node B.

    • If no, skip to Step 16.

14. Remove the host adapter from Node B.

    For the procedure about how to remove host adapters, see the documentation that shipped with your nodes.

15. Without enabling the node to boot, power on Node B.

    For more information, see your Sun Cluster system administration documentation.

16. Boot Node B into cluster mode.

    For the procedure about how to boot nodes, see your Sun Cluster system administration documentation.

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

    # devfsadm -C # scdidadm -C

18. Return the resource groups and device groups that 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