Virtualization

Look up virtualization in Wiktionary, the free dictionary.

Virtualization may refer to

Contents 1 Hardware 1.1 Memory 2 Storage 3 Software 4 Data 5 Desktop 6 Network 7 See also

[edit] Hardware

• Hardware virtualization, execution of software in an environment separated from the underlying hardware resources
  • Hardware-assisted virtualization, where some support for virtualization is built into the underlying hardware
  • Full virtualization, sufficiently complete simulation of the underlying hardware to allow software, typically a guest operating system, to run unmodified
  • Partial virtualization, where some but not all of the target environment is simulated. Some guests may need modifications to run, see paravirtualization
  • Paravirtualization, virtualization environments that require modifications to guest operating systems in exchange for higher efficiency

[edit] Memory

• Virtual memory, giving an application program the impression that it has contiguous working memory, isolating it from the underlying physical memory implementation
• Memory virtualization, aggregating RAM resources from networked systems into a single memory pool

[edit] Storage

• Storage virtualization, the process of completely abstracting logical storage from physical storage

[edit] Software

• Operating system-level virtualization, hosting of multiple virtualized environments within a single OS instance
  • Application virtualization, the hosting of individual applications in an environment separated from the underlying OS
    • Cross-platform virtualization, allowing software compiled for a specific CPU and operating system to run unmodified on different CPUs and/or operating systems
• Virtual appliance, a virtual machine image designed to run on a virtualization platform
• Virtual machine (VM), a software (possibly hardware assisted) implementation of a machine (computer) that executes programs like a real machine

[edit] Data

• Data virtualization, the presentation of data as an abstract layer, independent of underlying database systems, structures and storage
• Database virtualization, the decoupling of the database layer, which lies between the storage and application layers within the application stack

[edit] Desktop

• Desktop virtualization, the remote display, hosting or manipulation of a graphical computer environment (desktop)
  • Virtual Desktop Infrastructure (VDI), a specific concept of desktop virtualization

[edit] Network

• Network virtualization, creation of a virtualized network addressing space within or across network subnets
  • Virtual private network (VPN), a computer network in which some of the links between nodes are carried by open connections or virtual circuits in some larger network(s), such as the Internet

[edit] See also

• Virtual chargeback, charging back the costs of a virtual IT infrastructure to departments or business units
• Timeline of virtualization development
• Emulation (computing)
• Computer simulation
• numeronym, explaining why "V12N" is sometimes used as an abbreviation for "virtualization"

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