blackbearnh writes "O'Reilly News talked to Bill Coleman, former founder of BEA and current founder and CEO of Cassett Corporation, about the challenges involved in building more energy-efficient data centers. Coleman's company is trying to change the way resources in the data center are used, by more efficiently leveraging virtualization to utilize servers to a higher degree. In the interview, Coleman touches on this topic, but spends most of his time discussing how modern data centers grossly overcool and overdeploy hardware, leading to abysmal levels of efficiency.
I think we tend to run our data centers a lot cooler than they need to be, one because we just don't turn off the cooling, and two, because these standards go back to when there were a lot of mechanical things inside the data center. I think on average most data centers are running too cool; I think the primary reason is we just don't really actually regulate the temperature and we just let it keep getting lower even though at low utilization times servers do use less power. They'll use as low as 30-percent of their full run time power.
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