Bacula (Manage backup, recovery) - Client and server

Bacula is a set of computer programs that permit you (or the system
administrator) to manage backup, recovery, and verification of
computer data across a network of computers of different kinds. In
technical terms, it is a network Client/Server based backup program.
Bacula is relatively easy to use and efficient, while offering many
advanced storage management features that make it easy to find and
recover lost or damaged files. Due to its modular design, Bacula is
scalable from small single computer systems to systems consisting of
hundreds of computers located over a large network.

More info on website: http://www.bacula.org