Remote backup solutions

[Göran Nilsson]

Hi all.
Im looking for som software (opensource) that's scalable to to plenty of
remote backups over the Internet. The idea about this is offering small
companys to do theire backup to a remote distance, and don't have to concern
that much about it. The companys servers are generally NT 4.0 Server up to
Windows2003. The backup system should be based on a FreeBSD 6.0 system. In
the beginning it won't be that many companys doing remotebackups still, it
should be easy grow with the jobs needed.
Anyone have a pointer to what i should look for?
Shoud the backups be done via a vpn solutions like "OpenVPN" and rsync?
Or should i look for something else? Are there any "pitfalls" i should
lookout for?

Anyway any/all feedback is most appriciated.



/Goran