--- On Mon, 9/22/08, Mike Eggleston <mikeegg1 AT mac DOT com> wrote:

> From: Mike Eggleston <mikeegg1 AT mac DOT com>
> Subject: Re: [Bacula-users] Sending tapes Off-site
> To: "Robb Wagoner" <robb AT dcexp DOT net>
> Cc: bacula-users AT lists.sourceforge DOT net
> Date: Monday, September 22, 2008, 2:50 PM
> On Mon, 22 Sep 2008, Robb Wagoner might have said:
> 
> > I want to send the monthly full backups off-site for
> DR purposes. I
> > also need to keep an on-site copy of the full backups
> on-site in the
> > event of non-DR restores.
> > 
> > My thoughts are to use either:
> > 
> > 1. bcopy. Keeping track of  the tapes that are used
> for full backups
> > and which of those have been duplicated.
> > 2. Migration. Full backups are written to an Off-Site
> Pool and
> > migrated to an On-Site Pool.
> > 
> > I don't have adequate disk space to make one of
> the pools file-based,
> > which means that for either 1., or 2., I won't be
> able to run any
> > other jobs while the duplicating process (Migration or
> bcopy) is
> > running as both tape drives will be in use.
> > 
> > My inclination is to use Migration:
> > 
> > * Pool "Offsite" with 6 month retention
> period; "Volume Use Duration"
> > of a several days so that the jobs on a partially used
> tape are
> > migrated; "Next Pool" = "Onsite"
> > * Pool "Onsite" with 1 month retention
> period
> > * Full backup jobs use pool "Offsite"
> > * Migrate jobs from "Offsite" to
> "Onsite"
> > * Set Migration job priority lower than backup jobs so
> that they are
> > effectively done when nothing else is going on.
> > 
> >  I will then have to create a custom SQL query
> (query.sql) to
> > determine which tapes that are in pool
> "Offsite" & in the library &
> > have been fully migrated. These are the tapes that are
> ready to be
> > sent off-site.
> > 
> > 
> > I am wondering what others do for this. . .
> > 
> > Thanks,
> > Robb
> 
> Hi Robb,
> 
> I have 2T of disk that I store all my backups on. My last
> job of the
> night copies the disk volumes that were modified to tape.
> Each morning
> I send the tape off site. I do fulls the first weekend of
> each month
> and am currently writing about 12 DLT 4 tapes.
> 
> I'm not using migration.
> 
> Mike
> 
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If you have 2 tape drives, you can also use "dd" command to copy data from one 
tape to another.


Hemant Shah
E-mail: hjrrs AT yahoo DOT com



      

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