Disk device groups are Solstice DiskSuite disksets that have been registered with Sun Cluster. To remove a disk device group, use the metaclear(1M) and metaset(1M) commands. These commands unregister and remove the disk device group from the cluster configuration, and return the disk device group to a non-cluster diskset.
Refer to the Solstice DiskSuite documentation for the steps to remove a diskset.