1- Data must first be backed up from the disk to be replaced.
  2- The disk drive must be removed from the system configuration.
  3- The system must be shutdown.
  4- After shutdown has completed the 7134 can be powered off.
  5- The disk drive can then be physically removed from the 7134 and
     the new drive installed.
  6- The 7134 is then powered on and the system booted.
  7- The data should then be restored to the new disk drive.