Instruction manual
CHAPTER 8. SYSTEM BACKUP FOR DEFINITY G3r
4.
5.
6.
If the user requests that the backup take place on the standby processor, the standby
processor must be in service, shadowing enabled, and refresh completed (E16). If the
file system of the tape is a core-dump file system, the command will be denied (E17).
For incremental backup, if the file system type of the tape is an installation file system,
and the vintage of the boot image running in the active processor matches the vintage of
the boot image on the tape, then the system will first configure the tape with the same
configuration as is currently running. If the in-memory vintage does not match the vintage
on the tape, the
backup
command will be denied (E18). The tape must be manually
configured in this situation.
If the
incremental
option is specified and the file systems of the disk and tape are not
the same, the command will be denied (E23).
For full backup, if the tape has installation, large, or core-dump file system, backup will
proceed.
If errors are encountered in the operations described above, the backup operation should
not be attempted.
Restore Command
The
restore
command allows the user to copy files from a tape (which was used to backup the
disk) to the disk. This operation will be used for system installation, system upgrades/updates, or
after a repair of the disk has occurred.
Command Syntax
restore disk [active | standby | SPE_A | SPE_B | both | either] [incremental | full]
The options,
[active | standby | SPE_A | SPE_B | either I both
], specify which mass storage
system the user wishes to restore.
Invoking the
restore
command with the
SPE_A
option causes files from the tape associated with
processor
A
to be copied to the disk on that same processor.
SPE_A
is the default in a simplex
system.
Invoking the restore command with the
SPE_B
option causes files from the tape associated with
processor
B
to be copied to the disk on that same processor.
Invoking the
restore
command with the
active
option causes the files on the tape on the active
procesor to be copied to the disk on the same processor.
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