FOCUS METRICS SYSTEMS
Issue 2, February 2009
THE NEW METRICS SYSTEMS
The positive impact of Power Usage Effectiveness (PUE) and Data Center infrastructure Efficiency (DCiE) – the two most widely used metrics for measuring data center efficiency – cannot be overstated. The development of PUE and its counterpart DCiE has enabled data center operators to establish a performance benchmark that promotes best practice, lowers cost and ultimately drives profitability. But PUE is not the end – it is the start. Other metrics will be published in 2009 which promise much more.
made to address this most complicated of challenges. For example, industry consortium the Green Grid is working on the Data Center energy Productivity (DCeP) Index, the UpTime Institute has developed Site Analytics Validate Effectiveness (SAVE) and Corporate Average Data Center Efficiency (CADE), and power giant Emerson Network Power is promoting Compute Units Per Second (CUPS).
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www.datacenterdynamics.com
UE is about power and efficiency – it is not about the usefulness of the computing that goes on in the data center. Various efforts are being
This is the quest for the holy grail of efficiency metrics which measures IT performance and its usefulness to the business. There is some way to go.
The Green Grid is meeting in San Jose for its technical forum (4-5 February). The agenda says it will give updates on DCeP. CUPS is one of eight proxies that Emerson is working on, and which it will present at the Green Grid technical forum.
In a white paper the Green Grid said: “While data center productivity is much more difficult
to determine, members of the Green Grid feel this is a key strategic focus for the industry. In effect, this calculation defines the data center as a black box – power goes into the box, heat comes out, data goes into and out of the black box, and a net amount of useful work is done by the black box. This in some ways parallels the work being done with the Environmental Protection Agency (EPA) and Standard Performance Evaluation Corporation (SPEC) at the server level in which the SPEC working group may produce a standard on the performance of a system, and the EPA
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