Category:Virtualization: Difference between revisions

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From Wikipedia, the free encyclopedia

In computing, virtualization is a broad term that refers to the abstraction of computer resources:

Virtual machine (VM), a software implementation of a machine (computer) that executes programs like a real machine

Platform virtualization, which separates an operating system from the underlying platform resources

Full virtualization, sensitive instructions replaced by binary translation or trapped by hardware - all software can run in the VM, e.g. IBM's CP/CMS, VirtualBox, VMware Workstation
Hardware-assisted virtualization, CPU traps sensitive instructions - runs unmodified guest OS; used e.g. by VMware Workstation, Xen, KVM
Partial virtualization, for specific applications rather than the operating system
Paravirtualization, a virtualization technique that presents a software interface to virtual machines that is similar, but not identical, to that of the underlying hardware, thereby requiring guest operating systems to be adapted
Operating system-level virtualization, a method where the operating system allows for multiple user-space instances (virtual hosting, chroot jail + resource management)

Application virtualization, the hosting of individual applications on alien hardware/software

Portable application, a computer software program that runs from a removable storage device as a USB flash drive
Cross-platform virtualization, allows 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
Emulation or simulation

Virtual memory, which allows uniform, contiguous addressing of physically separate and non-contiguous memory and disk areas
Storage virtualization, the process of completely abstracting logical storage from physical storage
Network virtualization, creation of a virtualised 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
Memory virtualization, aggregates RAM resources from networked systems into virtualized memory pool
Desktop virtualization, the remote manipulation of a computer desktop
Timeline of virtualization development, further work in this area

Articles in category "Virtualization"

The following 6 pages are in this category, out of 6 total.

Intro to virtualization

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@@ Line 7: / Line 7: @@
 In computing, virtualization is a broad term that refers to the abstraction of computer resources:
-    * Virtual machine (VM), a software implementation of a machine (computer) that executes programs like a real machine
+::* Virtual machine (VM), a software implementation of a machine (computer) that executes programs like a real machine
-          o Platform virtualization, which separates an operating system from the underlying platform resources
+:::* Platform virtualization, which separates an operating system from the underlying platform resources
-                + Full virtualization, sensitive instructions replaced by binary translation or trapped by hardware - all software can run in the VM, e.g. IBM's CP/CMS, VirtualBox, VMware Workstation
+::::* Full virtualization, sensitive instructions replaced by binary translation or trapped by hardware - all software can run in the VM, e.g. IBM's CP/CMS, VirtualBox, VMware Workstation
-                + Hardware-assisted virtualization, CPU traps sensitive instructions - runs unmodified guest OS; used e.g. by VMware Workstation, Xen, KVM
+::::* Hardware-assisted virtualization, CPU traps sensitive instructions - runs unmodified guest OS; used e.g. by VMware Workstation, Xen, KVM
-                + Partial virtualization, for specific applications rather than the operating system
+::::* Partial virtualization, for specific applications rather than the operating system
-                + Paravirtualization, a virtualization technique that presents a software interface to virtual machines that is similar, but not identical, to that of the underlying hardware, thereby requiring guest operating systems to be adapted
+::::* Paravirtualization, a virtualization technique that presents a software interface to virtual machines that is similar, but not identical, to that of the underlying hardware, thereby requiring guest operating systems to be adapted
-                + Operating system-level virtualization, a method where the operating system allows for multiple user-space instances (virtual hosting, chroot jail + resource management)
+::::* Operating system-level virtualization, a method where the operating system allows for multiple user-space instances (virtual hosting, chroot jail + resource management)
-          o Application virtualization, the hosting of individual applications on alien hardware/software
+:::* Application virtualization, the hosting of individual applications on alien hardware/software
-                + Portable application, a computer software program that runs from a removable storage device as a USB flash drive
+::::* Portable application, a computer software program that runs from a removable storage device as a USB flash drive
-                + Cross-platform virtualization, allows software compiled for a specific CPU and operating system to run unmodified on different CPUs and/or operating systems
+::::* Cross-platform virtualization, allows 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 appliance, a virtual machine image designed to run on a virtualization platform
-                + Emulation or simulation
+::::* Emulation or simulation
-    * Virtual memory, which allows uniform, contiguous addressing of physically separate and non-contiguous memory and disk areas
+::* Virtual memory, which allows uniform, contiguous addressing of physically separate and non-contiguous memory and disk areas
-    * Storage virtualization, the process of completely abstracting logical storage from physical storage
+::* Storage virtualization, the process of completely abstracting logical storage from physical storage
-    * Network virtualization, creation of a virtualised network addressing space within or across network subnets
+::* Network virtualization, creation of a virtualised 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
+::* 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
-    * Memory virtualization, aggregates RAM resources from networked systems into virtualized memory pool
+::* Memory virtualization, aggregates RAM resources from networked systems into virtualized memory pool
-    * Desktop virtualization, the remote manipulation of a computer desktop
+::* Desktop virtualization, the remote manipulation of a computer desktop
-    * Timeline of virtualization development, further work in this area
+::* Timeline of virtualization development, further work in this area
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