GCN Tech Blog

By GCN Staff

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Where the power flows

For this week's issue of GCN, Emerson Electric Power provided a breakdown of where power goes in the data center. Somewhat surprisingly, servers within the data center only use a little over half the power of all IT equipment. Network and storage equipment can gobble some juice as well: Almost half the power for IT equipment in the data center goes to this equipment.

One thing caught our eye: Of all the power going into the data center, only 60 percent actually goes to the IT equipment. And our breakdown detailed how that 60 percent gets used.

But what about the other 40 percent, we wondered. Where does the rest of that juice go? The Emerson press representative sent us a full breakdown of where all the power goes in a data center.

Here it is:

IT equipment: 60 percent.


Lighting, etc: 3 percent.


Cooling: 25 percent.


Air movement: 12 percent.




Cooling and air movement collectively take up 37 percent of data center electricity. Of course most of the hot air that needs to be cooled, or replaced by cooler air, is coming from the servers.

Posted by Joab Jackson on Oct 09, 2007 at 9:39 AM


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