I built my own Windows Home server from scrap parts just laying around. Plus I bought a few 500 gig hard drives.
its backs up every thing and mirrors every thing daily, weekly and monthly.
the Windows Home server has many other features as well, like remote login from where ever to upload and download files
you can try it for 120 days free, just pay like $5 for shipping.
http://www.microsoft.com/windows/pro...rver/eval.mspx
Im sure there are some other flavor of "home servers" based on other OS's but I drank the Windows cool aid.
James