Remove the disk/subdisk/plex from veritas volume manager

#vxplex -g appdg -o rm dis vol103-01

If the disk group is exported, then you can force
bash-3.2# vxplex -g appdg -o rm -f dis vol121-01

#Remove disk from diskgroup
vxdg -g appdg rmdisk appdg01

Dissociating and removing plexes
When a plex is no longer needed, you can dissociate it from its volume and remove it as an object from VxVM. You might want to remove a plex for the following reasons:
to provide free disk space
to reduce the number of mirrors in a volume so you can increase the length of another mirror and its associated volume. When the plexes and subdisks are removed, the resulting space can be added to other volumes
to remove a temporary mirror that was created to back up a volume and is no longer needed
to change the layout of a plex
To save the data on a plex to be removed, the configuration of that plex must be known. Parameters from that configuration (stripe unit size and subdisk ordering) are critical to the creation of a new plex to contain the same data. Before a plex is removed, you must record its configuration.
See “Displaying plex information” on page 218.”
To dissociate a plex from the associated volume and remove it as an object from VxVM, use the following command:
# vxplex [-g diskgroup] -o rm dis plex

For example, to dissociate and remove a plex named vol01-02 in the disk group, mydg, use the following command:
# vxplex -g mydg -o rm dis vol01-02

This command removes the plex vol01-02 and all associated subdisks.
Alternatively, you can first dissociate the plex and subdisks, and then remove them with the following commands:
# vxplex [-g diskgroup] dis plex

# vxedit [-g diskgroup] -r rm plex

When used together, these commands produce the same result as the vxplex -o rm dis command. The -r option to vxedit rm recursively removes all objects from the specified object downward. In this way, a plex and its associated subdisks can be removed by a single vxedit command.

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