I just sold one of these PowerEdge T320 Servers to a client and I think they are going to be very happy with it. They will be running Windows Small Business Server 2011 on it and it will do just fine for their file sharing and Sharepoint needs.

The video below is from http://www.getconnectedmedia.com, and they do a good job along with the Dell Rep. in going over some of the key benefits of having a server.