The Snapshot Pro plugin really is suitable for networks with very site?

The Snapshot Pro plugin really is suitable for networks with very site?

In the future my wordpress network will be approximately 5000 site.
Obviously I will need to make backups frequently.
1) Snapshot Pro plugin really indicated?
2) What is the best way to program (schedule) the backups from each site? All at the same time? At different times?
3) edublogs use it?

Thanks in advance!

att,
Josimar