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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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What Is Virtualization?

Virtualization has the capability for a physical piece of hardware to run multiple virtual instances of an operating system. In a traditional sense, every server deployed was associated with physical hardware, had a single operating system installed, and the server performed a specific function. When it was time to add a new server to the environment, companies purchased a new piece of hardware, installed the operating system, and then configured any applications or services. With virtualization, companies no longer require new hardware for every single new server because virtual machines can share a common set of physical resources.

In virtualization, the physical hardware with the resources, such as processing power, ...

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