Am 01/04/10 18:25, schrieb taltman:
Hello,
I'm looking to get feedback on a proposed home backup solution using
rdiff-backup. I'm new to backups, and I'm trying to strike a balance
between simplicity and adequate protection. I've read the rdiff-backup
webpage, documentation, and wiki, and I've been working through the
"Backup and Recovery" O'reilly book.
I basically have two laptops (one Mac and one Linux), one Linux virtual
web server, and one Linux workstation in my home setup. My current plan
involves:
1. Using 'unison' to sync between the machines, using the workstation as
the hub.
2. Using two 1 Tbyte externally enclosed hard drives.
3. Performing an initial rdiff-backup of the data partition on the
workstation to each of the external hard drives.
4. Taking one of the hard drives to an off-site location.
5. Using the remaining hard drive at home for daily/weekly rdiff-backups
6. Periodically switching the two external hard drives between my home
and the off-site location.
I'm not quite sure what's the best way to do #6. Should I mirror the two
external hard drives using a tool like rsync or unison? Or should I just
use rdiff-backup between the workstation and each individual external
hard drive?
a)
Unison: No! You have to either mirror the other rdiff-backup dataset 1:1
( I don't think Unsion is the weapon of choice here) or leave it alone,
otherwise the history (reverse-deltas) will break.
b)
rsync mirroring: Would work.
Advantage: You will have the full history on both drives.
Disadvantage: If one backup disk has subtle corruption you will mirror
the junk to the other disk.
c)
Just rdiff-backup:
Disadvantage: Every second month of history is on the other drive.
Advantage: Less hassle
Also, just to confirm my impression from reading the docs: currently,
rdiff-backup doesn't handle monthly/weekly/daily backup schedules
"out-of-the-box",
Yes.
though I think there are a few ways to approximate
that. And I further realize that with rdiff-backup, there's less of a
need for those different levels of backups due to the compression/delta
scheme.
Any help that you can provide to a newbie would be greatly appreciated!
Thanks,
taltman
Regards,
Jakob
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