About the vxfenclearpre utility

You can use the vxfenclearpre utility to remove SCSI-3 registrations and reservations on the disks.

See Removing preexisting keys.

This utility currently does not support server-based fencing. You must manually resolve any preexisting split-brain using the server-based fencing configuration.

See Issues during fencing startup on VCS cluster nodes set up for server-based fencing.