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7-Servers - Special Topics in Hardware Systems(CSV 881(CSV...

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Low Power Design S i l T i i H d S t (CSV 881) Special Topics in Hardware Systems (CSV 881) Power Issues in Servers and Data Centres Instructor: Preeti Ranjan Panda Department of Computer Science and Engineering Indian Institute of Technology, Delhi
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Data Center Power Delivery Power Dist UPS Power Supply dc/dc 98 - 99% 88 - 92% 68 - 72% 78 - 85% CPU Mem I/O 100W 125W 178W 182W 200W HVAC 1 200W / 1 Ton (76%) d d f d ff h bl h h ff l f l h HVAC 1,200W / 1 Ton (76%) July 2007 2 Preeti R. Panda and Anubha Verma, IIT Delhi Adapted from: Mansoor and Griffith, Enabling high efficient power suppliers for servers, Intel Tech. Symposium, 2004
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Cost of Power Delivery Power Path Efficiency Power (kW) MW-h Cost (annual) L d S ( 100) 9 8 113 $8 500 Loads Systems (x100) (not including dc/dc & ac/dc) 9.8 $8,500 Load Cooling 3.1 Delivery x 85% Dc/dc 2.1 109 $8,200 x 70% Power supply 5.1 x 90% UPS 1.9 x 98% Distribution 0.4 x 76% Delivery Cooling 3.0 T l 40% T l 222 $16 700 d d f d ff h bl h h ff l f l h Total = 40% Total $16,700 Total efficiency 40% Energy Cost Approx. $0.80 / W Energy Cost Approx. $0.80 / W-year year July 2007 3 Preeti R. Panda and Anubha Verma, IIT Delhi
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