10 Facts About Nested virtualization

Hardware-assisted Nested virtualization is a way of improving overall efficiency of Nested virtualization.

Hardware Nested virtualization can be viewed as part of an overall trend in enterprise IT that includes autonomic computing, a scenario in which the IT environment will be able to manage itself based on perceived activity, and utility computing, in which computer processing power is seen as a utility that clients can pay for only as needed.

The usual goal of Nested virtualization is to centralize administrative tasks while improving scalability and overall hardware-resource utilization.

Nested virtualization refers to the ability of running a virtual machine within another, having this general concept extendable to an arbitrary depth.

In other words, nested virtualization refers to running one or more hypervisors inside another hypervisor.

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Nature of a nested guest virtual machine does not need not be homogeneous with its host virtual machine; for example, application virtualization can be deployed within a virtual machine created by using hardware virtualization.

Nested virtualization becomes more necessary as widespread operating systems gain built-in hypervisor functionality, which in a virtualized environment can be used only if the surrounding hypervisor supports nested virtualization; for example, Windows 7 is capable of running Windows XP applications inside a built-in virtual machine.

Way nested virtualization can be implemented on a particular computer architecture depends on supported hardware-assisted virtualization capabilities.

Desktop Nested virtualization is the concept of separating the logical desktop from the physical machine.

Operating-system-level Nested virtualization, known as containerization, refers to an operating system feature in which the kernel allows the existence of multiple isolated user-space instances.