hypervisor

Virtual machine host

A hypervisor is software that creates and manages virtual machines—simulated computers running on a single physical host.

It allocates hardware resources like memory and processing power among multiple guest operating systems, letting one server run Windows, Linux, and other systems simultaneously.

Hypervisors underpin cloud computing infrastructure and data center virtualization.

virtualization

guest

Welcomed visitor

  • hostOne receiving guests
  • VMwareVirtualization software company
  • KVMMulti-system input sharing device

vSphere · bare-metal · snapshot · migration · cloning · template

isolation

sandbox

Enclosed play area

protection · boundary · security · containment · namespace · firewall · airgap

resource

allocation

Distribution of shares

cores · memory · storage · overcommit · ballooning · reservation · shares · limits · pooling · affinity

management

orchestration

Scoring for instrumental ensemble

monitoring · scaling · maintenance · patches · upgrades · console · API · CLI · dashboard · lifecycle

Opposites
virtualization hierarchy

hypervisorvirtual machine

Emulated computer system

workload · application · tenant

hardware abstraction

hypervisorbare metal

Direct hardware access, unmediated

control vs. controlled

hypervisorguest

Welcomed visitor

Family

hypervisors

Familiarity
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