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Hypervisor

A hypervisor allows a single server to run multiple virtual machines, each with their own operation system, independently from each other.

A virtual machine submits requests for resources to the hypervisor, and the hypervisor coordinates the access to the physical providers of these resources.

Because virtual machines share the same physical server, the efficiency of data centers can be improved by reducing

number of servers
rack space
power consumption
cooling
interconnect cabling

Level 1 and level 2 hypervisors

A level 2 hypervisor is an application that runs inside an existing OS.

A level 1 hypervisor is the OS itself.

Examples of level 1 hypervisors include

Hyper-V
VMware ESXi

Examples of level 2 hypervisors include

Oracle VM VirtualBox
VMWare Workstation
WMWare Playstaion

Because Hyper-V is a level 1 hypervisor, it means that Windows 10, once Hyper-V is enabled, the OS itself becomes a virtual machine.

TODO

get-computerInfo | select-object *hyper*

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