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©Microsoft® 2009
Performance/Watt/Dollar
Dileep Bhandarkar, Ph. D.Distinguished EngineerGlobal Foundation Services Microsoft Corporation
Watt Matters in Energy Efficiency!
Rack Assembly
12
2 to 4 TOR (2 to
4 RU)
96 Servers(Up to 48
RU)
2 Bulk Power (2x
3RU)
Upper Power
Domain
Lower Power
Domain
Input Voltage: 415/480 VAC, 3Ø
Output Voltage:
12 VDC
Capacity: 4.5 KW
Phase Balanced:
±2%
Battery Pack4 Groups of 4 Batteries (13.2 V
Nominal)160 Batteries for 16.8 kW
Server Performance vs Power
Idle: 32% of peak power10% load: 50% of peak power20% load: 56% of peak power50% load: 70% of peak power80% load: 85% of peak power
5x performanceFor
40% more power!
Opportunities
Better Alignment with Datacenter Technologies
480V 3 phase power supplies at rack levelIn rack UPS instead of current central UPS
Rightsizing of platforms for major workloadsLow Power DIMMs and ProcessorsTiny CPU cores – Atom? Bobcat? ARM?System on a Chip for lower platform powerDynamic Power CappingDesigns for higher temperature operationRack level power and coolingBroader adoption of virtualization