Microsoft said Thursday the next upgrade of its Windows Server operating system will scale up to 256 logical processors. Microsoft defines a logical processor as the number of physical processors multiplied by the number of cores as well as the number of threads, said corporate vice president for Windows Server and solutions, Bill Laing, during a keynote speech at the company's Windows Hardware Engineering Conference (WinHEC).
Thus, Windows Server 2008 R2 will be able to, for example, support a system with 64 physical processors each with 2 cores, each supporting 2 threads (64 x 2 x 2 = 256), said Laing. Windows Server 2008 today supports up to 64 logical processors.
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