Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

222 Creating and administering plexes
Taking plexes offline
Resolving a disk or system failure includes taking a volume offline and attaching and
detaching its plexes. The two commands used to accomplish disk failure resolution are
vxmend and vxplex.
To take a plex OFFLINE so that repair or maintenance can be performed on the physical
disk containing subdisks of that plex, use the following command:
# vxmend [-g diskgroup] off plex
If a disk has a head crash, put all plexes that have associated subdisks on the affected disk
OFFLINE. For example, if plexes vol01-02 and vol02-02 in the disk group, mydg,
had subdisks on a drive to be repaired, use the following command to take these plexes
offline:
# vxmend -g mydg off vol01-02 vol02-02
This command places vol01-02 and vol02-02 in the OFFLINE state, and they
remain in that state until it is changed. The plexes are not automatically recovered on
rebooting the system.