How to Remove a Storage System

Use this procedure to remove a storage system from a running cluster.

This procedure removes all data that is on the storage system you remove.

This procedure provides the long forms of the Sun Cluster commands. Most commands also have short forms. Except for the forms of the command names, the commands are identical. For a list of the commands and their short forms, see Appendix A, Sun Cluster Object-Oriented Commands, in Sun Cluster 3.1 - 3.2 Hardware Administration Manual for Solaris OS.

Before You Begin

To perform this procedure, become superuser or assume a role that provides solaris.cluster.modify RBAC authorization.

1. Migrate any Oracle Real Application Clusters tables, data services, or volumes off the storage system.

2. Halt all activity to the controller module.

   For instructions, see the Sun StorEdge RAID Manager User’s Guide and your operating system documentation.

3. If a volume manager manages any of the LUNs on the controller module you are removing, remove the LUN from any diskset or disk group.

   For more information, see your Solaris Volume Manager or Veritas Volume Manager documentation.

   You must completely remove LUNs that were managed by Veritas Volume from Veritas Volume Manager control before you can delete the LUNs.

   # vxdisk offline cNtXdY # vxdisk rm cNtXdY

4. Disconnect all cables from the storage system. Remove the hardware from your cluster.

5. From one node, delete the LUN.

   For the procedure about how to delete a LUN, see the Sun StorEdge RAID Manager User’s Guide.

6. Remove the paths to the LUNs you are deleting.

   # rm /dev/rdsk/cNtXdY* # rm /dev/dsk/cNtXdY* # rm /dev/osa/dev/dsk/cNtXdY* # rm /dev/osa/dev/rdsk/cNtXdY*

7. Use the lad command to determine the alternate paths to the LUNs you are deleting.

   The RAID Manager software creates two paths to the LUN in the /dev/osa/dev/rdsk directory. Substitute the cNtXdY number from the other controller module in the storage array to determine the alternate path.

   For example, with this configuration.

   # lad c0t5d0 1T93600714 LUNS: 0 1 c1t4d0 1T93500595 LUNS: 2

   The alternate paths would be the following.

   /dev/osa/dev/dsk/c1t4d1* /dev/osa/dev/rdsk/c1t4d1*

8. Remove the alternate paths to the LUNs you are deleting.

   # rm /dev/osa/dev/dsk/cNtXdY* # rm /dev/osa/dev/rdsk/cNtXdY*

9. On all nodes, remove references to the storage system.

   • If you are using Sun Cluster 3.2, use the following command:

     # cldevice clear

   • If you are using Sun Cluster 3.1, use the following command:

     # scdidadm -C

10. If you are removing the last StorEdge A3500FC controller module from a hub or FC switch in your cluster, remove the hub or FC switch hardware and cables from your cluster.

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    Note –

    If you are using your StorEdge A3500FC storage array in a SAN-configured cluster, you must keep two FC switches configured in parallel. This configuration maintains cluster availability. See SAN Solutions in a Sun Cluster Environment in Sun Cluster 3.1 - 3.2 Hardware Administration Manual for Solaris OS for more information.

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    If you are not removing the last controller module, skip to Step 12.

11. If you plan to remove a host adapter that has an entry in the nvramrc script, delete the references to the host adapters in the nvramrc script.

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    Note –

    If there are no other parallel SCSI devices connected to the nodes, you can delete the contents of the nvramrc script and, at the OpenBoot PROM, set setenv use-nvramrc? false.

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12. Remove any unused host adapter from nodes that were attached to the storage system.

    1. Shut down and power off Node A from which you are removing a host adapter.

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

    2. Remove the host adapter from Node A.

       For the procedure about how to remove a host adapter, see the documentation that shipped with your node hardware.

    3. Perform a reconfiguration boot to create the new Solaris device files and links.

    4. Repeat Step a through Step c for Node B that was attached to the storage system.

13. Switch the cluster back online.

    • If you are using Sun Cluster 3.2, use the following command:

      # clresourcegroup online +

    • If you are using Sun Cluster 3.1, use the following command:

      # scswitch -Z

14. If you are removing the last storage system from your cluster, remove the software packages.

    For the procedure about how to remove software packages, see the documentation that shipped with your storage system.