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Learning VMware vSphere by Rebecca Fitzhugh, Abhilash G B

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What is a hypervisor?

A hypervisor is a piece of software usually not very big in terms of compute or storage footprint, which makes server virtualization possible. It forms an abstraction layer between the server's hardware resources and the operating system containers. There are two types of hypervisors defining two different types of approaches:

  • Type 1 hypervisor (bare-metal hypervisor)
  • Type 2 hypervisor (hosted hypervisor)

A type 1 hypervisor is installed directly on the server hardware as you would install an operating system on any hardware. Hence it is referred to as a bare-metal hypervisor. It interfaces directly with the hardware. This empowers it to effectively manage sharing of the server hardware resources, among the virtual machines: ...

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