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.