Creating an archived back-up root disk for disaster recovery

In addition to having an active backup of the root disk, you can keep an archived back-up copy of the bootable root disk. Use the vxrootadm command to create a snapshot of the booted root disk, which creates a mirror and breaks it off into a separate disk group.

To create an archived back-up root disk

  1. Add a disk to the booted root disk group.
  2. Create a snapshot of the booted root disk.
    # vxrootadm [-v] mksnap targetdisk targetdg
  3. Archive the back-up root disk group for disaster recovery.