Cluster deconfiguration checklist

To ensure complete deconfiguration of a cluster, you must systematically remove different cluster components.

Table 1. Independent disk pool deconfiguration checklist for clusters
Independent disk pool requirements
__	If you are using switched disk pools, the tower should be switched to the node which is the SPCN owner before deconfiguring the cluster resource group. You can use Initiate Switchover (QcstInitiateSwitchOver) API or the Change Cluster Resource Group Primary (CHGCRGPRI) command to move the CRG back to the SPCN owner. If this step is not performed, you will not be able to mark the tower private for that system.
__	If you plan to remove a subset of an independent disk pool group or remove the last independent disk pool in the switchable devices, you must end the CRG first. Use the End Cluster Resource Group (ENDCRG) command.
__	If you want delete an independent disk pool that is participating in a cluster, it is strongly recommended that you first delete the device cluster resource group (CRG). See Deleting a CRG for details. You can also use the Remove CRG Device Entry (RMVCRGDEVE) command to remove the configuration object of the independent disk pool from the CRG.
__	After you have removed the configuration object of the independent disk pool from the cluster switchable device, you can delete an independent disk pool.
__	Delete the device description for an independent disk pool by completing these tasks: On a command-line interface, type WRKDEVD DEVD(*ASP) and press Enter. Page down until you see the device description for the independent disk pool that you want to delete. Select Option 4 (Delete) by the name of the device description and press Enter.

Table 2. Cluster resource group deconfiguration checklist for clusters
Cluster resource group requirement
__	Delete cluster resource group by completing the either of the following steps: If clustering is not active on the node, then type DLTCRG CRG(CRGNAME) on a command-line interface. CRGNAME is the name of the CRG that you want to delete. Press Enter. If clustering is active on the node, then type DLTCRGCLU CLUSTER(CLUSTERNAME) CRG(CRGNAME) on a command-line interface. CLUSTERNAME is the name of the cluster. CRGNAME is the name of the CRG that you want to delete. Press Enter.