VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 10, Administering Cluster Functionality
Administering VxVM in Cluster Environments
265
Moving Objects Between Disk Groups
As described in “Moving Objects Between Disk Groups” on page 128, 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.
Note You can only move objects between shared disk groups on the master node. You
cannot move objects between private and shared disk groups.
Splitting Disk Groups
As described in “Splitting Disk Groups” on page 130, 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.
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.
For a description of the other options, see “Moving Objects Between Disk Groups” on
page 128.
Joining Disk Groups
As described in “Joining Disk Groups” on page 131, 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.
Note You cannot join a private disk group and a shared disk group.