The official definition of computer virtualization is the pooling and abstraction of resources and services in a way that masks the physical nature and boundaries of those resources and services. A VLAN is a great example of this definition because it masks the physical nature of resources. The concept of virtualization dates back to the 1970s, with IBM mainframes. These mainframes were separated into virtual machines so that different tasks could run separately and to prevent a process failure that could affect the entire system.
One of the issues IT departments face today is called “server sprawl.” This concept implies . . .
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