Online Backup Solution

Hi all,

I would like to provide online backup solution for my hosting clients. Meaning backup of their local files (Outlook pst or whatever files they want to backup). I am looking for some software, which would allow them to:
- select which files to backup
- schedule time of backup
- secure transfer and storage (encryption)
- licensing per workstation

I am assuming that they would install the software on their local (Windows) computers, and I would like to use a Linux machine for backup (so I guess there should be some server part of the software as well).

Any suggestions?

Thanks a lot!

 

anybody?

There is really nobody offering something similar?