I agree with the Peters.
We have more than one computer on all the time at home (just don't start with me about electricity). I use the free version of
SyncBack and like it very much. It enables me to set up scheduled backups or synchronizations between any folders anywhere on the network. Since internal storage is even cheaper than external USB drives, I just have everybody store their documents, music, pictures, etc. on the server and back it up every night to another drive on the network. I'm really happy with this software.
AND I periodically update an external USB drive for offsite backup.
