[SAC] Re: [support.osuosl.org #20349] Backup Implementation for OSGeo VMs

[Martin Spott via RT]

Hi Lance,

On Tue, Feb 28, 2012 at 11:07:53PM +0000, Lance Albertson via RT wrote:

> I would prefer integrating it into our bacula and we could come up with a
> cost estimate for you to contribute into. How much data are you backing up?
> What kind of a rotation are you using/doing? How many clients need to be
> backed up? We also sync our bacula data off-site daily.

The combined net disk space on the OSGeo VM's is approx. 2 TByte and,
even though we currently don't use all of it, I think it's a good idea
being prepared to do so.

My favourite is to do one full backup per week, differentials every day
and to keep a full backup at least until the successor has finished, at
best until shortly before n+2 gets written to the media.
I was informed that we don't require retaining months of backup
history.  Thus the space requirements would account to approx.
4.5 - 5 TByte (two full backups plus one busy week of differentials).

Currently we're backing up approx. 10 clients, I'd expect the number to
grow slightly.

Best regards,
	Martin.
-- 
 Unix _IS_ user friendly - it's just selective about who its friends are !
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