A small team of Facebook engineers spent the past two years tackling a big challenge: how to scale our computing infrastructure in the most efficient and economical way possible.
Working out of an electronics lab in the basement of our Palo Alto, California headquarters, the team designed our first data center from the ground up; a few months later we started building it in Prineville, Oregon. The project, which started out with three people, resulted in us building our own custom-designed servers, power supplies, server racks, and battery backup systems.
via Facebook Engineering Blog – Building Efficient Data Centers with the Open Compute Project. This is pretty neat, but I’m going to go with Marco. The point is to demonstrate Facebook is working at a high scale much like Google and they aren’t opening up anything that actually makes them their real money.