NewsFactor - IBM announced Thursday its zEnterprise mainframe server, which it described as "the most powerful and energy-efficient mainframe ever." The Armonk, N.Y.-****d company called the new zEnterprise "the most significant design change in 20 years for the IBM mainframe." At the same time, the company unveiled a new systems design that allows mainframe, POWER7 and System x servers to be managed as one virtual system.

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