DEC VAX 4000 300 Manual page 112

This appendix describes the following procedures:
• Installing and booting standalone BACKUP on the system disk
• Installing and booting standalone BACKUP on a TK50 tape cartridge
• Backing up and restoring the system disk
C.1 Overview of Standalone BACKUP
The Backup utility lets you create and restore backup copies of files,
directories, and user disks. Because the Backup Utility copies only what
is on the disk and ignores sections of any open files contained in memory,
you should use it to back up user disks, not the system disk. If you use
the Backup Utility to back up the system disk, the portions of the files that
were in memory and data about files not yet written back to the disk (cache)
will not be recorded on the resulting backup copy.
Use standalone BACKUP to make a complete backup of the system disk.
Standalone BACKUP is a version of the Backup Utility that runs without
the support of the entire VMS operating system. Before you use standalone
BACKUP, you must shut down the VMS operating system. The shutdown
procedure sends the contents of the caches back to the disk and closes any
open files. By shutting down the system and using standalone BACKUP,
you can make an exact copy of the system disk.
You can keep standalone BACKUP on the system disk, a TK50 tape
cartridge, or any other media the system supports. Digital recommends
that you keep standalone BACKUP on the system disk and on a tape
cartridge.
Usually you boot standalone BACKUP from the system disk because it
saves time. You should, however, keep a copy of standalone BACKUP on a
tape cartridge in case the system disk becomes damaged.
Appendix C
Backup Procedures
Backup Procedures C–1