You can convert an existing VxVM disk group to a Sun Cluster device group by importing the disk group onto the current node, then registering the disk group as a Sun Cluster device group.
Become superuser on any node of the cluster.
Import the VxVM disk group to the current node.
# vxdg import diskgroup |
Register the VxVM disk group as a Sun Cluster device group.
See How to Register a Disk Group as a Device Group (Veritas Volume Manager).