[dan_the_welder]

FreeNAS is awesome and extensible. Out of the box it's quite functional and it's open source.

It's the backbone of my work/home network. All the Linux boxes have it mounted in the home directory, so all the machines with Rhythmbox think it's local. All the windows machines can access it easily.

There are a dozen services you can enable as your needs dictate. Setup is straightforward through a web interface. Extra bonus it runs headless on crap hardware, in my case a 433mghz Emachine.

http://en.wikipedia.org/wiki/FreeNAS