Re: [BackupPC-users] Thinking aloud about backup rotation

Hi Nigel,

On Wed, Jan 27, 2010 at 02:40:24PM -0000, Nigel Kendrick wrote:

> > From: Tino Schwarze [mailto:backuppc.lists AT tisc DOT de] 
> > Sent: 27 January 2010 11:27
> > To: backuppc-users AT lists.sourceforge DOT net
> > Subject: Re: [BackupPC-users] Thinking aloud about backup rotation
> > 
> > Hi,
> > 
> > On Wed, Jan 27, 2010 at 10:33:48AM -0000, PD Support wrote:
> >  
> > There is an easier solution: Just don't name the files by weekday -
> > backup into the same file every day like "xyz_db.bak". Then you are free
> > to
> > a) copy it somewhere else on the server with a weekday name (and it
> > doesn't need to be backed up there)
> > b) just rely on BackupPC for restores
> > 
> > Why would you want to keep one week's worth of backups on the server
> > itself if BackupPC keeps those backups anyway?
> 
> Hi Tino - I'm just really thinking out loud about options. Local, daily, ZIP
> backups will be handy for minor issues as there will be 30+ sites spread
> over much of the southern half of the UK, backed up to 5 regional
> Linux-based servers. Restoring from a local file (via remote access) will be
> quicker than getting the data back to site through ADSL or by car/courier.
> 
> We already create a generically-named .bak file and back it up via BackupPC,
> but I can see circumstances where the rotation feature might be useful.

If possible, let your job run at, say 11 o'clock p.m. or like 10 minutes
before midnight. It could
1. move last days backup /backupdir/current.bak to 
/somewhere-else/backup_thisday.bak
2. start new backup into /backupdir/current.bak

Then let BackupPC only backup /backupdir. That way you get your local
history of backups and provide BackupPC the opportunity to use rsync's
differential transfer optimizations.

HTH,

Tino.

-- 
"What we nourish flourishes." - "Was wir nähren erblüht."

www.lichtkreis-chemnitz.de
www.tisc.de

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