[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [rdiff-backup-users] Incremental, automated, remote, secure

From: Dominic Raferd
Subject: Re: [rdiff-backup-users] Incremental, automated, remote, secure
Date: Mon, 22 Jul 2013 10:28:34 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130620 Thunderbird/17.0.7

On 21/07/2013 19:43, Grant wrote:
I was worried more about corruption *on the system being backed up*,
which would not be detected for a long time, and then you have bad bits
and want to find old backups.
I see. As long as the rdiff-backup repository has not experienced
corruption independently, it should be able to recover your good data
by regressing through the bad recent files back to good earlier
ones. In fact this is a critical attribute of rdiff-backup and a
reason why it is so valuable.
Fair enough, but you're then left with a single point of media failure.
Hence my focus on multiple tape/disk back in time.   But I agree
rdiff-backup does a tremendous amount of good.
How about pushing from the clients to the backup server, updating an
rdiff-backup repository of the pushed data on the server, then pulling
the rsynced data from the backup server to another system, and
updating an rdiff-backup repository of the pulled data on the other
system?  Would that eliminate the "single point of media failure"
problem?  A third set of backups in a third geographical location
could even be added.

With a redundant system like that, are offsite tape backups only
necessary if you periodically prune the rdiff-backup repository?

Which is exactly how I do it. Backups are pushed individually by clients to the primary backup server which is a vm on the lan (using TimeDicer, based on rdiff-backup), then overnight this pushes the entire set of repositories to a TimeDicer mirror backup server offsite (using timedicer-mirror, based on rsync). The backup servers use LVM so no need to prune, just add more disks when required.


*TimeDicer* <http://www.timedicer.co.uk>: Free File Recovery from Whenever

reply via email to

[Prev in Thread] Current Thread [Next in Thread]