Once data has been saved to a save file through either a BRMS backup or
archive process, the save file data can be copied to media or deleted from
the save file library.
There are situations where you may decide to only save data to a save file
without ever copying it to media. In this way you are likely to keep the
save file on the system for a longer period of time in case the saved data
is needed for quick recovery. Most often, however, once data is copied from
the save file to tape, the save file will be deleted. There may be situations
where the save file is needed to be kept on the system for a period of time
after the copy of the save file to tape. The following table shows the different
options associated with copying save files to media and deleting save files
from the system.
Table 1. Options for copying save files to media
Action
Device: *NONE
Device: device-name
Copied To Media
No
Yes
Deleted from disk
On expiration
On expiration or when copied to media (which ever happens
last)
There are five commands that can be used to manage the save files.
These are:
Remove Media Information from BRM (RMVMEDIBRM)
Save Save Files using BRM (SAVSAVFBRM)
Start Expiration for BRM (STREXPBRM)
Start Maintenance using BRM (STRMNTBRM)
Work with Save Files using BRM (WRKSAVFBRM)
Notes:
The RMVMEDIBRM and SAVSAVFBRM commands delete only those save files that
have expired. The STREXPBRM command must run prior to these commands to flag
such save files as expired. The STREXPBRM and RMVMEDIBRM commands can
be scheduled to run periodically or can be processed as part of the daily
BRMS maintenance processing (see Daily Maintenance in BRMS).
The SAVSAVFBRM and STREXPBRM commands determine those save files that
need to be saved or expired and deleted from the system based on the object
and retention information specified in the control group attributes.
The RMVMEDIBRM and STREXPBRM commands can be run independently, but are
also components of the BRMS maintenance procedures. These procedures must
be run nightly. As such, if you are performing regular maintenance with the
STRMNTBRM command, then this will ensure that no expired save files are kept
on the system, thus reducing disk usage. Refer to Daily Maintenance in BRMS for more
information about setting up daily maintenance operations.
The SAVSAVFBRM command should not be confused with the option to save
contents of save files which is on the second screen of the control group
attributes, backup, and archive policies. These options refer to the ability
to save data in user save files to the media defined in your control group
or policy. SAVSAVFBRM is a command to save BRMS save files to media under
BRMS control. You can specify the SAVSAVFBRM command on the command line or
schedule it through the system job scheduler.
The Allow subsequent saves (ALWADLSAVE) parameter
of the SAVSAVFBRM command can be used to save the save files to media and
not have the save file deleted from the system. Specifying *YES for this parameter
indicates you intend to save the save files on subsequent save operations.
The save files will not be deleted from the system when maintenance is run.
If you specify this value, you must run a subsequent SAVSAVFBRM command using
ALWADLSAVE(*NO) to enable removal of these save files from the system.