Facebook has published photos and schematics of the design of the servers and systems powering its new data center in Oregon. On Friday we got a look at the real thing, as the company opened the doors of its Prineville facility to a group of journalists and local officials. Facebook Director of Datacenter Engineering Jay Park provided a tour of the data center, which we'll be presenting in two installments. Today's video provides a look inside the data halls housing thousands of servers that power Facebook, including a closer look at the custom servers, racks and UPS units the company created for the facility. This video runs about 8 minutes.