That depends on your backup solution.
Are you looking to back up various types of computers (e.g., Mac OS X, Windows, Linux, etc.)?
What kind of backups do you desire (e.g., incremental, clone, one-time, subset of data, complete backup, etc.)?
Please elaborate on exactly what kind of backup system you would like to implement and what kinds of computers you'll be backing up. Without that information, it's virtually impossible to suggest some kind of backup solution that would fulfill your needs, as we don't know what those needs are.