Digitial Realty in London - Five halls
Each data hall has staging workspace for technical operations, with lift access, power and cooling facilities throughout. The vast data halls are also kept cool with the help of 14 CRAC (computer room air conditioning) units that can be found operating in an N+2 configuration (providing back ups) in each of the 1,000 square foot pristine data halls.
The datacentre halls are raised 4m above ground level and have an 800mm raised floor. The floor can take loads of up to 12.5KN/m².
See A photo tour of Digital Realty's newest London datacentre by Sam Shead (ZDNet)
Selena has been at TechRepublic since 2002. She is currently a Senior Editor with a background in technical writing, editing, and research. She edits Data Center, Linux and Open Source, Apple in the Enterprise, The Enterprise Cloud, Web Designer, and IT Security blogs.
I'm surprised you didn't include this one. http://www.benaroya.com/SHBTC-NorthBuilding.aspx Cost-Efficient, Green Design Cost savings of 35% or more in energy and maintenance costs due to green design LEED Gold certified; Cooling 1.32 average PUE Highly efficient and cost-saving evaporative cooling system utilizing 100% outside air LEED Designed LEED Gold Certified Efficiently designed to take advantage of the Pacific Northwestâs mild climate