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

Creating and Administering Disk Groups
Upgrading a Disk Group
Chapter 4174
It may sometimes be necessary to create a disk group for an older
version. The default disk group version for a disk group created on a
system running Volume Manager 3.5 is 90. Such a disk group would not
be importable on a system running Volume Manager 2.3, which only
supports up to version 40. Therefore, to create a disk group on a system
running Volume Manager 3.5 that can be imported by a system running
Volume Manager 2.3, the disk group must be created with a version of 40
or less.
To create a disk group with a previous version, specify the -T version
option to the vxdg init command. For example, to create a disk group
with version 40 that can be imported by a system running VxVM 2.3, use
the following command:
# vxdg -T 40 init newdg newdg01=c0t3d0
This creates a disk group, newdg, which can be imported by Volume
Manager 2.3. Note that while this disk group can be imported on the
VxVM 2.3 system, attempts to use features from Volume Manager 3.0
and later releases will fail.