Hypervisor

(Short VMM) called a hypervisor, also Virtual Machine Monitor is a computer program that provides a virtual machine. The virtual -powered operating system instances are called guest systems.

  • 5.1 Software Development
  • 5.2 Technical Support
  • 5.3 Games

Word origin

" Hyper" comes from the Greek meaning "over". "Visor " can be " videre " from the Latin deduce what "see" means. So translated Analogously, it is a system that " overlooks " as " overseer " something or other systems or " watching something " - a feature that is indeed referred to in another context as monitoring, but has a different objective.

Classification

There are two types of hypervisors:

  • A Type 1 hypervisor ( native) runs without any additional software directly on the hardware. Also the Rootsystem runs on the hypervisor. A Type 1 hypervisor makes it possible to use fewer resources, but must itself over drivers for all the hardware have
  • A type 2 hypervisor (hosted ) is based on a full-fledged operating system and uses the device driver of the operating system under which it runs.

The term hypervisor is used inconsistently, as it is restricted in some sources to Type 1 or Type 2 with paravirtualization. Sources of IBM use the term hypervisor generally, ie for type 1 and type 2

Characteristics

Storage Hypervisor

A storage hypervisor is a management software for virtual storage infrastructures.

Converter

Programs such as the VMware Converter enable operating systems from physical machines to transfer ( partially in operation ) to virtual machines.

Examples

Examples of hypervisors are VirtualBox, Windows Virtual PC, VMware Workstation, Parallels Desktop for Mac, z / VM, PowerVM (formerly Advanced Power Virtualization ), Xen, VMware ESX / ESXi, KVM and Hyper-V.

Applications

Software Development

It can be kept for the development of software different components. For example, a database abstraction layer with Oracle and SQL Server are tested simultaneously without the need to install both.

Technical Support

A big advantage is the easy way to pass on the VMs. Copying the files is sufficient, as these can be run on any computer. Thus it can be kept in different versions in a department for technical support software.

Games

By PC virtualization software, it is also possible, among other things, playing computer games, for example, in compatibility mode of Windows XP will not function properly. Although some older games to run in compatibility mode and you can also save game. However, loading these Scores may result in different games to computer crash.

Windows 7 Storage-Hypervisor Kernel-based Virtual Machine
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