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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: WSJ: Big tech firms seeking power
I used very raw estimation (which is not well correct but dont make too much of errors) - to remive 1 KW out of building, yiou spend extra 1 KW. But anyway, 450,000 servers have a great power consumption - you can use river or a lake to cool them, but you still need 45,000 KW of power to make them work. So, to say 60,000KW - 100,000KW will nopt be a big mistake (total power consumption). Of course, if you build data center inside the the power plant dam, then you have both, enough cooling and enough power. -:) ----- Original Message ----- From: "Matthew Crocker" <[email protected]> To: <[email protected]> Sent: Friday, June 16, 2006 1:16 PM Subject: Re: WSJ: Big tech firms seeking power > > > I wonder just how much power it takes to cool 450,000 servers. > > 450,000 servers * 100 Watts/Server = 45,000,000 watts / 3.413 watts/ > BTU = 13.1 Million BTU / 12000 BTU/Ton = 1100 Tons of cooling > > A 30 Ton Liebert system runs about 80 amps @ 480 volts or 38400 > watts, you'll need at least 40 or them to cool 1100 tons which is > 1536 Kw * 24 hours * 7 days * 4.3 weeks = 1,110,000 KwH/month * $0.10/ > KwH = $111,000 /month in cooling. > > I think my math is right on this... > > -- > Matthew S. Crocker > Vice President > Crocker Communications, Inc. > Internet Division > PO BOX 710 > Greenfield, MA 01302-0710 > http://www.crocker.com >
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