Columbia University’s Advanced Concepts Data Center Pilot June 17, 2011

Mechanical Room: 100 Level Data Center: 200 Level Campus Level server rack Raritan Power Distribution Units (PDUs) and Uninterruptible Power Supplies (UPSs) Wattnode meters chilled water pipes Main IT power feed (ATS4) power panel CRAC unit Flexim meters

Documented Improvements 3 Verified server energy efficiency improvements from January 2010 to March 2011: Increased load shows overlap between old and replacement equipment, followed by decreases when old equipment has been removed Successful experiment with replacement of 30 old servers with newer, presumably more efficient models led to funding of an ongoing annual $500K project to aggressively consolidate and virtualize most servers over the next three years, and to maintain a steady state three-year refresh cycle

Compute Performance 4 Estimated server compute performance has increased approximately 20% while energy demand has been reduced 5%

Storage Energy 5 An enterprise storage refresh project also leveraged our newly green data center approach to (a) require the bidding vendors to document their energy efficiency as one of the selection criteria, and, (b) implement a new overhead cable distribution system to begin the (lengthy) process of removing under floor airflow blockages. OLD Storage NEW Storage

Carbon Footprint Reduction 6 Average IT Power Demand Load Reduction14.34kW Annual kWh reduction due to IT equip (24h, 365d)125,601kWh Total Facility Power Demand Reduction (PUE of 2.07)29.68kW Total Annual kWh reduction260,030kWh Estimated Annual Cost Savings ($.185 per kWh)$48,106 Total Facility Carbon Footprint Reduction99.3Metric Tons of CO 2 Equivalent* *Calculated using MTCE/kWh Server Consolidation and Storage Refresh Projects 88 machines installed 120 machines retired Net decrease of 32 hardware devices

CUIT’s Power Usage Effectiveness (PUE) 7 Extensive instrumentation for real-time measurements of electrical and cooling loads has enabled us to measure and calculate our Power Usage Effectiveness in real time, and to confirm seasonal variations in PUE thanks to use of air- and water-side economizing 7/27/10 - Chilled Water Outage

CUIT’s Power Usage Effectiveness (PUE) 8 Extensive instrumentation for real-time measurements of electrical and cooling loads has enabled us to measure and calculate our Power Usage Effectiveness in real time, and to confirm seasonal variations in PUE thanks to use of air- and water-side economizing 7/27/10 - Chilled Water Outage

9 CUIT’s Power Usage Effectiveness (PUE) Seasonal variation identifies summer and winter PUE PUE varies by seasonal variations and use of free Winter free cooling IT load steadily decreasing; has little noticeable impact on PUE

NYSERDA This work is supported in part by the New York State Energy Research and Development Authority (NYSERDA agreement number 11145). NYSERDA has not reviewed the information contained herein, and the opinions expressed do not necessarily reflect those of NYSERDA or the State of New York. 10 External, Faculty and Internal advisory committees Departments of Statistics and Astronomy & Astrophysics Columbia University Facilities CUIT Data Center Facilities and Operations, Network Operations and Engineering, Systems Operations and Engineering, Research Computing Services, Classroom & Desktop Engineering, and the Project Management Office Office of the Executive Vice President for Research Thanks