I'm in the process of setting up a file server for about 6 people. Windows 7 isn't meant to be used as a server, but given the small amount of clients, I wonder what kind of obstacles could I face if I went this route. I'll consider other alternatives like an integrated NAS device, a Linux machine or a fully fledged Windows 2008 server, but for a number of reasons (mainly familiarity) I'm interested in getting to know reasons not choose this option.
So, what are the cons of using a Windows 7 pc as a file server for around 6 client pcs?