HP 3000 Manuals HP 3000 Manuals
Performing a System Backup
The following sections show you how to perform a full backup and both
kinds of partial backups, cumulative and incremental.
In each set of steps, you may either create a backreference to the tape
drive you want to use, or you may refer to the drive via a device link.
To designate all files, you enter the file description / or you can enter
@.@.@. In MPE/iX terminology, this equates to "all files in all groups
in all accounts." In HFS terminology, this equates to "all files on the
system."
If you choose to backup a subset of files, use the following table as a
guideline for how to specify the files you want in the hierarchical file
system.
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| | |
| Wildcard | Meaning |
| | |
--------------------------------------------------------------------------------------------
| | |
| @.group.account | /ACCOUNT/GROUP/ or "all files in GROUP.ACCOUNT" |
| | |
--------------------------------------------------------------------------------------------
| | |
| @.@.account | /ACCOUNT/ or "all files in the directory ACCOUNT" |
| | |
--------------------------------------------------------------------------------------------
| | |
| @.@.@ | / or "all files on the system" |
| | |
--------------------------------------------------------------------------------------------
| | |
| @.@ | /logon account/ or "all files in the logon account" |
| | |
--------------------------------------------------------------------------------------------
| | |
| @ | ./ or "all files in the current directory" |
| | |
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To perform a full system backup
To store your entire system to tape, do the following:
1. Create a backreference by entering:
FILE BACKUP;DEV=TAPE
Or, you can refer to the tape drive by its LDEV number:
FILE BACKUP;DEV=7
2. Enter the STORE command:
STORE @.@.@;*BACKUP;SHOW;DIRECTORY
If you do not enter a file equation, the system supplies a default file
equation with your user logon name as the formal file designator. For
example, if you log on as MANAGER.SYS, the system generates a tape file
equation with MANAGER as the formal file designator. In this case, the
tape reply request for MANAGER appears on the console when the STORE
command is executed.
For more detailed information on how to do a full backup, refer to
Performing System Operating Tasks (32650-90137).
To perform an incremental system backup
During an incremental backup, the STORE command makes a backup copy of
only those files that have been modified on or after a specified date.
Use the date of the last backup, whether partial or full, as the
reference point.
To perform an incremental backup of your system, enter:
STORE @.@.@;*BACKUP;SHOW;DIRECTORY;DATE>=mm/dd/yy[yy]
Or, to use the default file equation, enter:
STORE @.@.@;;SHOW;DIRECTORY;DATE>=mm/dd/yy[yy]
The mm/dd/yy[yy] specifies the month, day, and year of the last partial
or full backup. You can enter the year as two digits (94) or four digits
(1994).
For more detailed information on how to do a partial backup, refer to
Performing System Operating Tasks (32650-90137).
Save the tapes from each partial backup until the next full backup is
complete.
To perform a cumulative system backup
In a cumulative backup, the date you enter as mm/dd/yy[yy] is the date of
the last full backup. The number of files copied to tape during each
partial backup continues to accumulate until the next full backup and, at
any time, you will only need two tapes to restore the files: the last
full backup and the most recent partial backup tape.
To perform a cumulative backup of your system, enter:
STORE @.@.@;*BACKUP;SHOW;DIRECTORY;DATE>=mm/dd/yy[yy]
To use the default file equation, enter:
STORE @.@.@;;SHOW;DIRECTORY;DATE>=mm/dd/yy[yy]