A plex is shown in the RECOVER state if its contents are out-of-date with respect to the volume. This can happen if a disk containing one or more of the plex's subdisks has been replaced or reattached. If a plex is shown as being in this state, it can be recovered by using the vxmend and vxvol commands.
To recover an unstartable volume with a disabled plex in the RECOVER state
# vxmend [-g diskgroup] -o force off plex
# vxmend [-g diskgroup] on plex
# vxplex [-g diskgroup] att volume plex
# vxmend [-g diskgroup] fix clean plex
# vxvol [-g diskgroup] -o bg start volume
If the data in the plex was corrupted, and the volume has no ACTIVE or CLEAN redundant plexes from which its contents can be resynchronized, it must be restored from a backup or from a snapshot image.