Do you have any recommendations for a Linux based backup solution that would be capable of backing up MS Servers and servers hosting MS Exchange data? I've started doing my own research, but so far have come up with few options. I'd prefer something open-source. Thanks!
On the Ubuntu side Canonical suggests http://backuppc.sourceforge.net/
I've been fairly happy with backuppc for disc-to-disc backups (as opposed to going to tape). It provides a nice web interface for managing it, and works very well for smaller groups of backups, say 10 or 20 machines.