Discussions related to exporting backups to tape and backing up directly to tape.
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pkelly_sts
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GFS Tape question

Post by pkelly_sts »

If I have a GFS tape job configured to run monthly on the last Friday of the month then by default it starts at 00:00 on the scheduled day.

However, the info at https://helpcenter.veeam.com/backup/vsp ... e_hiw.html says:

"At 00:00 of the day set in the GFS job schedule the GFS job starts and checks periodically if the source job created a backup:"

Does this mean that as of 00:00 it starts watching for new runs of jobs, and if it sees one, it'll then either copy it (if was a full) or synthetically generate a new full (if was incremental)?

In other words, as of 00:00, it isn't going to look at any jobs that already ran the previous night & copy those RPs, UNLESS the source job doesn't run by 00:00 the next day, at which point the GFS job will then synthetically create a new tape-full based on the most recent RP found?

If one of the source jobs is a backup copy job (without any associated GFS retention) which doesn't complete its copy until, e.g. 05:30, then will it pick up that RP rather than wait for the RP that runs/copies that night?
veremin
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Re: GFS Tape question

Post by veremin »

Does this mean that as of 00:00 it starts watching for new runs of jobs, and if it sees one, it'll then either copy it (if was a full) or synthetically generate a new full (if was incremental)?
Correct. If no new restore points will be created within a day, a GFS backup to tape job will leverage the latest available one.

Also, there is a regkey controlling the said behaviour. Using it, you can set a timeout after which GFS job will check previous days to find suitable GFS candidate. Default value is 24 hours.

Thanks.
pkelly_sts
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Re: GFS Tape question

Post by pkelly_sts »

OK cool, thanks for the clarification, 24hrs should suit me fine.
veremin
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Re: GFS Tape question

Post by veremin »

I will reference it here just in case you need it in future. Thanks.
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