I run a client/server network OS Windows server 2008 Ent. Rackmount case Dual Xeons 8 mem slots 2 8 port Megaraid cards, 16 hotswap drive bays I currently run raid 5 configs and 1 SSD drive dedicated to Server 2008 OS.I use an old RV082 front end Firewall/proxy server that is tied to both my internal and external network. I also have but do not use a Windows 2003 Exchange server and Web server. I do have a dedicated 3D Bluray movie computer that is connected to our Projector and is also tied to the network. I use lots of software and Cad programs such as solidworks, catia and unigraphics as well as many other programs for art work, movies etc.