On Sat, Jun 27, 2009 at 11:05:23AM +0200, Tino Schwarze wrote:
> Hi Mark,
>
> On Fri, Jun 26, 2009 at 08:28:32AM -0700, Mark Phillips wrote:
> > I am looking for inexpensive off-site storage that is compatible with
> > backuppc.
>
> In my opinion, off-site storage and backup don't go together. After all,
> your backups contain all of your important (and possibly secret) data. I
> wouldn't want to store these on some online-service.
Therefore you should always have offsite backups encrypted using a key that
is not stored on the offsite backup. Ideally, the offsite server (assuming
you don't control the physical access to it), shouldn't even ever see the
unencrypted data.
You can do this at either filesystem-level or blockdevice-level. The first one
is (in the case of backuppc, because of massive hardlinking and millions of
small files), very cpu and ram intensive, and more difficult to encrypt.
Using a blockdevice-approach is a lot less stressing for you system, but
probably a serious waste of bandwidth unless you have a way to send
incrementals updates.
> > Is anyone using backuppc to backup files to Amazon S3? I have googled for
> > some articles on this topic, and all I have found are old ones. It seems
> > 1. S3 does not "allow" hard links and use of rsync. There is a s3sync
> > option, but I haven't looked a it.
> > 2. Using an EC2 front end running backuppc might work, and then storing to
> > s3. Haven't found any backuppc articles about this.
>
> I'm not familiar with S3 or EC2. Currently, BackupPC requires direct
> access to a posix file system with hardlink support. And it does quite
> stress the file system!
Neither am i familiar with S3 or EC2, and have no idea what kind of ways
there are for synchronisation, but maybe you can synchronize the backup
volume (blockdevice level) or backup filesystem with something on S3/EC2.
I would advise against using backuppc to do offsite-backups of a backuppc
pool. It will require many resources and increases the difficulty for
doing a restore.
--
Pieter
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