Determining the DCO version number
To use the instant snapshot and DRL-enabled DCO features, you must use a version 20 DCO, rather than version 0 DCO.
To find out the version number of a DCO that is associated with a volume
Use the vxprint command on the volume to discover the name of its DCO. Enter the following:
# DCONAME='vxprint [-g diskgroup] -F%dco_name volume'
Use the vxprint command on the DCO to determine its version number. Enter the following:
# vxprint [-g diskgroup] -F%version $DCONAME