Abstract: A data center includes two or more rack computing systems and an air handling system. The rack computing systems may each include racks and computing devices mounted in the rack. The air handling system includes one or more air moving devices external to the one or more racks. The air moving devices create a negative pressure relative to ambient air at air inlets to the racks to draw air from the inlets and through computing devices in the racks.

Abstract: A data center includes two or more rack computing systems, a free cooling system, and an electrical power system. The free air cooling system includes air moving devices external to the rack computing systems. The electrical power system includes switchgear and one or more power panels. The switchgear receives power from a utility power feed. The power panels receive power from the switchgear. The power panels supply electrical power to the computing devices.

Abstract: A method of operating a data center includes providing a first operating environment in a first portion of the data center and providing a second operating environment in a second portion of the data center. The first operating environment meets a first set of infrastructure specifications. The second operating environment meets a second set of infrastructure specifications. At least some of the infrastructure specifications of the second set of infrastructure specifications are less stringent than corresponding infrastructure specifications of the first set of one or more infrastructure specification.