VERITAS Volume Manager 3.5 User's Guide - VERITAS Enterprise Administrator (September 2004)

Volume Tasks
Removing a Mirror From a Volume
Chapter 4142
After you have provided all necessary information in the dialog box, click
OK.
NOTE
The Mirror Remove task requires a volume name. This task also
requires the number of mirrors to remove, a disk name, or a mirror
name.
If a volume only has two mirrors and one mirror is removed, the
volume is no longer redundant.
The last mirror (plex) cannot be removed from a volume.
When a mirror is removed, the space occupied by that mirror is
returned to the free space pool.