John Moorhouse <john.moorhouse AT 3jays.me DOT uk> wrote on 02/19/2010 12:11:45 
PM:

> I'm happily using backupPC to backup a number of machine within our 
> home network, I'm wondering what will happen if I use it to backup 
> the file on the host machine that is the virtual disc for a number 
> of virtual box VM, will it have to backup the whole file each run 
> (they are rather large) or is it capable of only copying those bits 
> of the file that have changed ?
> 
> Basically I'm after suggestions of 'best practice' in this situation

First of all, backing up VM files directly without coordination from the 
VM system (e.g. snapshots, etc.) is highly likely to end up with corrupted 
VM files.  I leave determining the correct way of doing this up to you.

Regarding BackupPC:  it depends on the transfer method you use.  The 
answer is to use rsync/rsyncd:  only the deltas will be copied across the 
network.  However, no matter how you transfer them, a completely new copy 
of every file that's changed (and that's highly likely to be nearly all of 
them) will be made on the backup server.

Tim Massey


------------------------------------------------------------------------------
Download Intel&#174; Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/