SOURCE: Emerson Network Power

November 18, 2008 08:00 ET

"MPG for Data Centers" Takes Step Forward

COLUMBUS, OH--(Marketwire - November 18, 2008) - An industry-wide measure of data center efficiency is a critical next step in addressing IT energy consumption, according to a new white paper issued today by Emerson Network Power, a business of Emerson and the global leader in enabling Business-Critical Continuity™. The white paper, Energy Logic: Calculating and Prioritizing Your Data Center IT Efficiency Actions, uses a placeholder metric to highlight the value of measuring data center efficiency in the same way that miles-per-gallon provides an easily understood and agreed-upon efficiency measure for cars.

The complete analysis is now available for download by visiting, a new Web site developed by Emerson Network Power which offers data center professionals the latest information on cutting-edge advances in energy efficiency. This site also offers a tool that allows data center professionals to calculate the efficiency of their data centers.

Key News Facts:

  • The latest installment of Emerson Network Power's Energy Logic white paper series advances the discussion started last year with the initial Energy Logic white paper, a prioritized roadmap to optimizing energy use without compromising availability or flexibility.

  • The first Energy Logic analysis did not address data center efficiency directly, because without a universally accepted metric for data center output, efficiency cannot be accurately quantified.

  • Today's white paper takes the next step by offering a sample metric to highlight the value of measuring data center efficiency in the same way that miles-per-gallon (MPG) provides an easily understood, agreed-upon performance measure for cars.

  • The white paper introduces the concept of CUPS, or Compute Units per Second, to show how a metric can work.

    • CUPS is a relative measure of server output. Using data from multiple industry sources, Emerson Network Power calculated the change in CUPS between 2002 and 2007, providing a common server performance measure required to calculate efficiency.

    • CUPS uncovers an important fact -- while data center energy consumption has risen in recent years, the increases are overshadowed by dramatic gains in output and efficiency. If data center output had remained flat between 2002 and 2007, the efficiency improvements achieved would have cut 2007 data center consumption to one-eighth the 2002 consumption.

  • Data center professionals can experiment with CUPS relative to their own data center in an online data center efficiency calculator.

  • The analysis also highlights how a metric will help data center managers prioritize decisions.

  • To promote industry discussion and debate toward development of an agreed-upon approach, Emerson Network suggests three criteria that an efficiency metric should meet:
    1. It should drive the right behavior.
    2. It should be available and published at the IT device level to help buyers make the right choice.
    3. It should be fully-scalable from the IT device to the data center level.

Attributable Quotes:

"Our goal with this next step in Energy Logic is to illustrate how a metric can uncover important insights about performance while helping data center managers prioritize efficiency efforts. Ultimately, a universal metric will help data center professionals make significant improvement in energy efficiency while meeting growing performance demands."
-- Jack Pouchet, director of energy initiatives for Emerson Network Power

"We continue to emphasize that today's increasingly efficient technologies, along with effective management strategies, can help drive data center efficiency. Through continued discussion and information sharing, the data center community can continue to deliver critical benefits to our economy and society while reducing energy usage."
-- Michael Zatz, manager of the U.S. EPA's ENERGY STAR Commercial Buildings Program

Related Links:

Whitepaper: Energy Logic: Calculating and Prioritizing Your Data Center IT Efficiency Actions
Podcast: Enabling Energy Efficient Business-Critical Continuity in the Data Center
Podcast: Doing a Data Center Assessment
Webcast: Energy Logic: Cutting Data Center Energy Costs by 50% or More
EPA's August 2007 data center energy efficiency report to Congress

About Emerson Network Power
Emerson Network Power, a business of Emerson is the global leader in enabling Business-Critical Continuity™ from grid to chip for telecommunication networks, data centers, health care and industrial facilities. Emerson Network Power provides innovative solutions and expertise in areas including AC and DC power and precision cooling systems, embedded computing and power, integrated racks and enclosures, power switching and controls, monitoring, and connectivity. All solutions are supported globally by local Emerson Network Power service technicians. Learn more about Emerson Network Power products and services at

About Emerson
Emerson, based in St. Louis, Missouri, USA, is a global leader in bringing technology and engineering together to provide innovative solutions to customers through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2008 were $24.8 billion. For more information, visit

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