Electrical Power

The Chicago site is powered by 12 utility feeds from 4 substations in a redundant configuration. The block redundant architecture is configured so that a single 2 MW catcher buss supports four (4) 2 MW primary busses. Each primary buss has two (2) 1 MW unity power factor UPS systems that are configured in a distributed redundant architecture. Three (3) 500 kVA/kW UPS units make up a single N+1 1 MW UPS system. Power is then distributed to PDUs located on the data hall floor.

Mechanical

A 1,400 Ton water cooled chilled water plant is utilized for heat rejections. Chilled water is fed via dual risers to each IT floor to create a chilled water loop on each floor. The chilled water is fed to CRAH units configured in an N+4 topology located on the data hall floor. A waterside economizer is utilized in the chilled water plant to maximize efficiency throughout the year, yielding an annual PUE of 1.4.

• Full Redevelopment in 2011
• 443,446 Square Feet (Gross Building) on 5.2 acres
• Eight Story Building (Including Lower Level)
• 15 Carriers Accessible (AT&T, Verizon, AboveNet, 360 Networks, Cogent, CFN, Fiberlink, Level 3/Looking Glass, CenturyLink/Qwest, Zayo, XO, Synesys, Intellifiber, Global Crossing, Paetec)
• 40MW of Total Electrical Service to Building (12MW Currently in Place)
• 2-6MW Existing Electrical Utility Services from Medical Center & Jefferson Substations (1-6MW Existing Electrical Utility Maintenance Feed)
• 4 Additional 6MW Feeds from Taylor Street Substation Being Installed
• Taylor Street Feeds will come from Newly Constructed Ring Bus (Fed by Separate Substations)
• 250 lbs per Square Foot Floor Loading
• Generator Enclosure Housing 20 2MW Generators
• 134,000 Square Feet of Raised Floor Data Center
• Highly-Flexible Design - 4 6,000 - 7,500 SF Suites per Floor (1,000kW Critical Load Each)
• 20 MW Data Center Critical Load
• Projected PUE Lower Than 1.4