All the volumes on a VxVM root disk may be mirrored. The simplest way to achieve this is to mirror the VxVM root disk onto an identically sized or larger physical disk. If a mirror of the root disk must also be bootable, the restrictions for the encapsulated root disk also apply to the mirror disk.
See "Booting root volumes" on page 104.
See "Setting up a VxVM root disk and mirror" on page 105.