The instant snapshot and DRL-enabled DCO features require that a version 20 DCO be associated with a volume, rather than an earlier version 0 DCO.
To find out the version number of a DCO that is associated with a volume
vxprintcommand on the volume to discover the name of its DCO:
] -F%dco_name volume
vxprintcommand on the DCO to determine its version number:
] -F%version $DCONAME