On Apr 24, 2009, at 5:51 PM, Charles Curley wrote:

On Fri, Apr 24, 2009 at 04:32:38PM -0600, Kimball Larsen wrote:
Good thoughts - but I'm now in the Boise area. :)

I've
read that amanda can be set up to store a copy of the backups on an
AmazonS3 share.  Does anyone here have any experience doing so?

I have no idea whether Amanda can do that, but what I have done could
be useful.

Back up to external drive A, using Amanda's virtual tape setup.

Have two more expternal drives, B and C. Swap between them. One is
installed and the other off site, with weekly rotation. Use a script
based on rsync to keep the installed one up to date.

The application here is: If you can rsync to Amazon, you're in. Or
forget Amazon and just do what I do, rotate between two drives.

(Why use an external drive for A? So you can move it to another
machine if you need to.)

How much data do you have to back up?

This is an interesting idea. I have quite a bit of data. I'm using backuppc at the moment, and it reports a current pool size of just about 600 GB. This represents roughly a month's worth of backups (done ever 6 hours on most hosts, with full backups done every 2 weeks, incrementals done in between) for 8 hosts, including our production servers and main work computers for all employees. I've heard that backuppc is more efficient at storing backups because it uses hard links - will amanda consume significantly more space to provide as many backups?

For example, if Amanda will take up 2TB to store the same amount of backup data as backuppc does today, It's not so simple as external drives, unless I want to drop a bunch of dough on desktop RAID systems and just swap them out back and forth.

Now, we don't mind spending some money to get a good solution in place, but before we do we want to investigate as many options as possible and make sure we are choosing the most elegant and / or cleanest solution.

Thoughts?

-- Kimball
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