There are many commercially available servers one is “Netgear Ready NAS”. Ready NAS has everything you need configured and all you need to do is connect it to your network.
There are many other commercially available home server products including the “Drobo”, ” Seagate”, “Buffalo”, “Western Digital” and others. I think discontinued the “HP Mediasmart Servers” with the “MS Windows Home Server”.
See all NAS at NewEgg!