Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Moving objects between shared disk groups
You can only move objects between shared disk groups on the master node. You
cannot move objects between private and shared disk groups.
You can use the vxdg move command to move a self-contained set of VxVM objects
such as disks and top-level volumes between disk groups. In a cluster, you can
move such objects between private disk groups on any cluster node where those
disk groups are imported.
See “Moving objects between disk groups” on page 234.
Splitting shared disk groups
You can use the vxdg split command to remove a self-contained set of VxVM
objects from an imported disk group, and move them to a newly created disk
group.
See “Splitting disk groups” on page 237.
Splitting a private disk group creates a private disk group, and splitting a shared
disk group creates a shared disk group. You can split a private disk group on any
cluster node where that disk group is imported. You can only split a shared disk
group or create a shared target disk group on the master node.
See “Moving objects between disk groups” on page 234.
Joining shared disk groups
You cannot join a private disk group and a shared disk group.
You can use the vxdg join command to merge the contents of two imported disk
groups. In a cluster, you can join two private disk groups on any cluster node
where those disk groups are imported.
If the source disk group and the target disk group are both shared, you must
perform the join on the master node.
See “Joining disk groups” on page 238.
Changing the activation mode on a shared disk group
The activation mode for access by a cluster node to a shared disk group is set
directly on that node.
The activation mode of a shared disk group can be changed using the following
command:
# vxdg -g diskgroup set activation=mode
481Administering cluster functionality
Administering VxVM in cluster environments