The preferred method for performing
system disk backup and restore operations is to boot the operating system
media, choose the DCL option from menu, and then enter the appropriate
backup commands. The detailed procedures are described in “Backing Up the System Disk” and “Restoring the System
If you have an OpenVMS Cluster environment with
more than one system disk, be sure the volume labels on each system
disk and on backup copies of system disks are unique. Use the SET
VOLUME/LABEL command to change a volume label, if necessary.