Yellow-Bricks. Desktop Virtualization and Thin Clients - Low Cost and Virtual computing. The Virtual Revolution - Home. Virtual machine. A virtual machine (VM) is a software-based emulation of a computer. Virtual machines operate based on the computer architecture and functions of a real or hypothetical computer. Definitions[edit] A virtual machine (VM) is a software implementation of a machine (e.g., a computer) that executes programs like a physical machine.
Virtual machines are separated into two major classifications, based on their use and degree of correspondence to any real machine: A VM was originally defined by Popek and Goldberg as "an efficient, isolated duplicate of a real machine". Current use includes virtual machines which have no direct correspondence to any real hardware.[2] System virtual machines[edit] System virtual machine advantages: The main disadvantages of VMs are: The desire to run multiple operating systems was the original motivation for virtual machines, as it allowed time-sharing a single computer between several single-tasking Operation Systems. Process virtual machines[edit] Techniques[edit] About ARAnyM. Virtual PC Guy's WebLog. KenBrashear.com - Ken's Virtual Drumkit.