On Sep 21, 2011, at 6:04 AM, Gavin McCullagh wrote:
> Hi,
>
> we've been happily using Bacula now for a few years, with a couple of big
> disk arrays as the storage devices/media. We use something along the lines
> of what the manual documents for fully automated disk-based backups. This
> has worked well and is really quick and convenient for doing restores from.
> It's expensive in hard disks though and none of the data is offline so a
> particularly nasty online incident might take out the backups as well as
> the live data.
>
> Our plan now is to add a Dell LTO5 drive in and start using a COPY job once
> per month. Almost everything gets a monthly Full backup to disk, so we'll
> then copy those jobs to tape and move them off-site. A couple of tapes
> will be retired from the pool each year and will be stored moreorless
> indefinitely.
>
> Do other people do this?
I do Copy to tape. Be aware: your tape drive must be on the same SD as your
disk storage. Copy and migrate jobs can involve only one SD. You cannot
copy/migrate
from one SD to another.
> If so, how do you deal with pruning? Do you just
> let the database grow over time or do you let the data get pruned and use
> bscan or other low-level volume tools to read them if necessary? Is there
> another approach I'm missing?
I keep all retention periods the same. If anything is pruned, the entire
job/file/volume is pruned.
I think database storage is cheap compared to the hassles of not having the
data in the database.
--
Dan Langille - http://langille.org
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