On Wed, Sep 09, 2009 at 09:33:03AM +0200, Christian Völker wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > as I have the same issue with storing my BackupPC outside I tried > another way the last days: > > First, my environment: > 28 hosts to back up. Mostly idle machines with minor services (so no big > databases and so on). Partially fileserver with only little daily > changes. So I expected not too much daily changes on the pool. > I want to copy the pool to a remote location after testing is done. > <snip> > So what does this mean to me? > > Looks like on my pool BackupPC changes approx two third of the whole > pool daily. So if I would transfer to a remote site I'd need to transfer > 300GB daily! > > Can anyone confirm BackupPC changes so many data inside the pool DAILY? > > I can't imagine the backed up data itself is 300GB!
I used LVM snapshots to see how much data changes. Put your BackupPC volume on an LVM logical volume, let it come to some stable state (disk usage +- doesn't change anymore), stop backuppc, umount, take an LVM snapshot, mount, start backuppc, and periodically check lvdisplay to see how much % of your snapshot is filled. It should give a good idea of how much data changes. On your setup with >300 home directories, and as much mysql and pgsql databases, resulting in a pool of 334GiB, +- 1-3GiB changes daily. -- Pieter ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
