Hypervisor Types

The key to virtualization is the concept of a hypervisor, which is a layer that sits between the host physical hardware and the guest virtual machines. The hypervisor facilitates access for the virtual machines to the physical hardware resources.

Virtualization hypervisors come in two distinct flavors. The first, Type 1, allows virtualization to occur directly in an existing operating system. Good examples of a Type 1 hypervisor are the Microsoft Virtual PC or VMware Workstation products. These are applications that run in an existing operating system on a workstation or server, and they allow the user to run virtual machines in the operating system. The hypervisor in these instances runs on top of the host operating system, ...

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