[Veritas-bu] Synthetic Backups
2009-07-07 16:08:05
Jim,
I've been testing it myself. I think you do need to keep that full backup
around. The "synthetic" part of a synthetic backup is the consolidation of the
full backup and the incrementals into a single image. This is done via
duplication.
The test scenario I'm working with is the following:
Full backup taken every 4 weeks and kept for 2 months
Incremental every night kept for 2 months
Synthetic full every week which is kept for 1 month (offsite retention only)
This seems to be working fine. I see a "full" backup during in the backup
image list for the test client. I've not actually trying doing a restore of
this "full" backup to see what tapes are loaded and how long it will take.
> I have a bit of an oddity.
>
> I'm testing Synthetic Backups.
>
> I have
>
> Day 1 Full backup. Day 2 Incremental
> Day 3 Synthetic-Full Day 4 Incremental (and manually expire the Day 1 Full)
> Day 5 Full backup runs
>
> So it appears I need to keep the Full backup around even though the Synthetic
> Full is suppose to be its equivalent.
>
> The Full backup runs on Day 5 even though I don't have it scheduled. In Fact
> Full are manual. Synthetics are scheduled.
>
> Is this normal?
>
> Running 6.5.4
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