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CADE (Corporate Average Data center Efficiency)

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- CADE (Corporate Average Data center Efficiency) is a metric used to rate the overall energy efficiency of an organization's data centers. CADE was introduced in a joint repot from the Uptime Institute and McKinsey that proposed the metric as a single key performance indicator that could be used to compare the energy consumption of one data center against another. CADE combines measurements of the energy efficiency and utilization of IT equipment and facilities into a single percentage. A higher CADE indicates a more energy efficient data center.

The formula for CADE is:

CADE = Facility Efficiency (FE) x Asset Efficiency (AE)

Facility Efficiency (FE) is equal to (Facility Energy Efficiency) x (Facility Utilization)
Asset Efficiency (AE) is equal to (IT Energy Efficiency) x (IT utilization)

CADE can be used to:

Monitor data center performance.
Measure how one organization's data centers compare to a competitor's IT operations.
Gauge the return on investment (ROI) on a green computing initiative.

Critics of CADE point out that the metric doesn't accurately reflect utilitization gains made by removing downed servers or address the utilitization or energy efficiency of outsourced servers at hosting providers. If widely adopted by operators and external regulators, however, CADE could serve a similar purpose in the IT operations of the world's corporations as the mandatory CAFE (Corporate Average Fuel Economy) standards do in the automobile industry.

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SPEC benchmarks: Simplify your server search: SPEC, a non-profit organization whose goal is computer system standardization, offers tools to help make purchasing IT equipment more palatable.

LAST UPDATED:

16 May 2008

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More resources from around the web:

-	Download the joint McKinsey-Uptime Institute Report on Data Center Efficiency that introduced the CADE metric at UptimeInstitute.org.
-	Michael Manos blogged about CADE in the aftermath of his keynote speeches on measuring data center efficiency at DataCenter World and the 2008 Uptime Symposium.
-	J. Nicholas Hoover wrote about CADE and measuring data center efficiency for Information Week.
-	Margaret Rouse blogged about CADE and green computing on ITKnowledgeExchange.com.

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