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IBM's Blade Server Meter-Reader

A plug-in for its systems-management console, IBM's PowerExecutive energy-management technology monitors and displays how much power each blade is using and how hot it is.

In a clear sign that power consumption continues to be a top concern for IT, IBM has upgraded its PowerExecutive energy-management technology for blade servers. A plug-in for Director, IBM's systems-management console, PowerExecutive monitors and displays how much power each blade is using and how hot it is.

"Unless you've done some fancy metering, all you know is a lot of electricity flows into this room," says Dan Olds, a principal analyst for the Gabriel Consulting Group. "You don't know what systems are using it, what's more efficient, what's less efficient."

PowerExecutive runs only on newer blades; older servers lack the necessary built-in sensor. --Sharon Gaudin,

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