A Mac mini works great as a Remote Time Machine. You just need to:
- Enable File Sharing
- Give each user their own login for security.
- Plug in an external hard drive for plenty of space
After that, the user will just need to connect to the drive using afp://000.000.000.000 (ip address) and they can backup using Time Machine.
Another option is using a Time Capsule for an Remote Time Machine. The benefit is the huge, server grade drive. The drawback is that there is only one login available so each user will have to use the same one. At Macminicolo.net, we colocate Time Capsule for Time Machine.
