Server Virtualization Definitions

This glossary explains the meaning of key words and phrases that information technology (IT) and business professionals use when discussing server virtualization and related software products. You can find additional definitions by visiting WhatIs.com or using the search box below.

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  • V

    Virtual PC

    Virtual PC is a program that emulates Windows 95, Windows 98, Windows NT, as well as IBM OS/2, or Linux on a Macintosh personal computer, assuming it's equipped with a sufficiently fast microprocessor.

  • virtual private server (VPS) or virtual dedicated server (VDS)

    A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

  • virtual storage appliance (VSA)

    A virtual storage appliance (VSA) is a storage controller that runs on a virtual machine(VM) to create shared storage without the cost of additional hardware. 

  • virtual switch

    A virtual switch is a software program that allows one virtual machine (VM) to communicate with another.

  • virtual to physical (V2P)

    Virtual to physical (V2P) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to a computer's main hard disk... (Continued)

  • Virtual to virtual (V2V)

    Virtual to virtual (V2V) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to another virtual machine or disk partition... (Continued)

  • virtualization

    Virtualization is the creation of a virtual version of something, with the goal of centralizing administrative tasks while improving scalability and workloads.

  • virtualization administrator

    A virtualization administrator is an employee whose responsibilities include virtual environment set up and maintenance, in addition to traditional sysadmin duties.

  • virtualization stack

    A virtualization stack is the collection of resources that, along with the hypervisor, make up the Microsoft Hyper-V environment.

  • Virtuozzo

    Virtuozzo is a software application for enterprise server virtualization that allows an administrator to create virtual environments on a host computer at the operating system (OS) layer... (Continued)

  • VM BIOS (virtual machine basic input/output system)

    A VM BIOS (virtual machine basic input/output system) is the set of instructions that controls the booting process of a virtual machine.

  • VM stall

    VM stall is the point where it becomes just as cost-effective to deploy a physical server as it is to deploy a virtual server.

  • VMDK file (virtual machine disk file)

    VMware Virtual Machine Disk File (VMDK) is a format specification for virtual machine (VM) files. A file with a .VMDK file extension is essentially a complete and independent virtual machine.

  • VMQ (Virtual Machine Queue)

    VMQ (Virtual Machine Queue) is a type of hardware packet filtering that delivers packet data from an outside virtual machine network directly to a virtualized host operating system. 

  • VMUG Advantage (VMware User Group Advantage)

    VMUG Advantage is a subscription-based membership offered by VMware User Group (VMUG).

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