VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Administering Cluster Functionality
Administering VxVM in Cluster Environments
Chapter 10 365
Moving Objects Between Disk Groups
As described in “Moving Objects Between Disk Groups” on page 161, 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 163, 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 161.
Joining Disk Groups
As described in “Joining Disk Groups” on page 165, 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.