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.
| 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"
|
To perform a full system backup |
 |
To store your entire system to tape, do the following:
Create a backreference by entering:
Or, you can refer to the tape drive by its LDEV number:
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]
|
