Gandalf-
BackupPC, is relatively easy to setup for a schedule like you propose. We
keep a 30 day backup history with a few extra weeks tacked on to get out to
~70 days, so the values below reflect our schedule:
The values you'll want to check:
$Conf{IncrKeepCnt} = 26; # This is the number of total 'unfilled'
backups kept.
$Conf{FillCycle} = 7; # This is how often a filled backup is kept (1 per
week) which strongly influences the next setting
$Conf{FullKeepCnt} = [ 4, 3, 0, ]; # This defines how many 'filled'
backups are retained.
The combination of filled and unfilled backups result in ~32 days of daily
backups plus a couple of older ones just in case a user needs a file from
more than a month ago.
To answer your second question: BackupPC does a good job of managing the
'filled' (think 'full') backups if you decide to delete one. I have
found, that BackupPC is pretty good at self healing from issues. We had a
number of backups impacted by running out of inodes during a cycle. While
the files lost by the lack of Inodes cannot be recovered, BackupPC
recovered gracefully on the next cycle after the file system was expanded.
--
Ray Frush
On Thu, Aug 31, 2017 at 4:39 AM, Gandalf Corvotempesta <
gandalf.corvotempe...@gmail.com> wrote:
> Additionally, what happens if I delete/lost/break the full backups ?
> Any subsequent incremental backups will be broken or automatically the
> following incremental backup would become a "full" like with
> rsnapshot?
>
> 2017-08-30 21:54 GMT+02:00 Gandalf Corvotempesta
> <gandalf.corvotempe...@gmail.com>:
> > Hi to all
> > Currently I use rsnapshot with success to backup about 20 hosts
> >
> > Our configuration is simple: every night I'll start 4 concurrent backups
> > keeping at least 10 days of old backups
> >
> > In this way, due to rsnapshot hardlinks , I'm able to restore any file
> up to
> > 10 days ago or to keep the backup chain consistent even by deleting
> multiple
> > backup trees at all.
> >
> > How can I get the same with bpc 4?
> > Last time I've tried I had difficult to understand filled/unfilled
> backups
> > and retention times
> >
> > Any help ? I would like to move to bpc due to it's deduplication and
> > compression feature but keeping the ability to destroy backup trees
> without
> > compromising the whole host backup is mandatory
> >
> > (In other words, with Bacula if you loose the full backup, you also loose
> > the whole backup chain, with rsnapshot there is no full, if you loose a
> > backup point, you'll only loose that backup point
>
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--
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