VERITAS Volume Manager 4.1 Administrator's Guide

Creating and Administering Disk Groups
Chapter 4178
DCO volume accompany their parent volume during the move. Use the
vxprint command on a volume to examine the configuration of its
associated DCO volume.
Figure 4-4, “Examples of Disk Groups That Can and Cannot be Split,”
illustrates some instances in which it is not be possible to split a disk
group because of the location of the DCO plexes.