I have been trying to get Bacula to do one thing for some time now, and
cannot come right even after reading most of the manual (well, at least
some), searching the mailing lists, and of course Google.

The Setup: I have a set of volumes for each of my sites and each night a
FULL backup of the included directories is done and the tape is marked
'Used'. When the tape is re-inserted, the volume must be 'Purged',
'Recycled', and overwritten.

The Problem: Since each site cannot be counted on to have the correct
tape inserted on the correct day, and since I cannot afford for a backup
not to run on those occasions, I need to ensure that whatever tape is in
the drive can be overwritten without complaint or intervention. That
means the volume must have almost no retention period, because if the
same tape is inserted the next day, it will not be 'Recycled'. Also,
'AutoPrune' is needed to continually ensure the volumes are ready for
recycling, but this purges volumes almost as soon as they are written;
of course, even though the data is still there, this is not at all
helpful for any restores since the entire tape must be scanned etc.

I am posting to find out if this scenario is possible with Bacula, or
what the best solution to the problem would be; hope I have not left
anything important out. Any help is much appreciated. Thank you in
advance.

Jarrod Meyer
Product Development Engineer
Thusa Business Support (Pty) LTD
 


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