Sun Cluster System Administration Guide for Solaris OS

How to Remove and Unregister a Device Group (Solaris Volume Manager)

Device groups are Solaris Volume Manager disk sets that have been registered with Sun Cluster. To remove a Solaris Volume Manager device group, use the metaclear and metaset commands. These commands remove the device group with the same name and unregister the disk group as a Sun Cluster device group.

Refer to the Solaris Volume Manager documentation for the steps to remove a disk set.