1sockchuck writes "How many servers is Google using? The company won't say, but a new report places the number at about 900,000. The estimate is based on data Google shared with researcher Jonathan Koomey, for a new report on data center power use. The data updates a 2007 report to Congress, and includes a surprise: data centers are using less energy than projected, largely due to the impact of the recession (buying fewer servers) and virtualization."
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