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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  • E

    ESXi Shell

    ESXi Shell is a VMware vSphere management tool that performs VMware commands that perform maintenance tasks like network, system, storage and more.

  • G

    Generation 1 VM (generation 1 virtual machine)

    A Generation 1 VM is a virtual machine that uses the original Hyper-V BIOS-based architecture.

  • generation 2 virtual machines (generation 2 VMs)

    Generation 2 virtual machines are Microsoft Hyper-V virtual servers that use the second generation of virtual hardware.

  • golden image

    A golden image is a template for a virtual machine (VM), virtual desktop, server or hard disk drive.  A golden image may also be referred to as a clone image or master image.

  • GSX Server

    GSX Server is a server virtualization program for Windows and Linux produced and distributed by VMware, a subsidiary of EMC Corporation and headquartered in Palo Alto, California... (Continued)

  • guest OS (guest operating system)

    A guest OS (guest operating system) is the operating system installed on a virtual machine or partitioned disk.

  • guest virtual machine (guest VM)

    A guest virtual machine (guest VM) is the software component of a virtual machine (VM), an independent instance of an operating system (called a guest operating system) and its associated software and information.

  • H

    hardware emulation

    Hardware emulation is the use of one hardware device to mimic the function of another hardware device.  Microsoft's Hyper-V includes hardware emulation because the Integration Services can only be installed on certain guest operating systems.

  • host virtual machine (host VM)

    A host virtual machine is the server component of a virtual machine (VM), the underlying hardware that provides computing resources to support a particular guest virtual machine (guest VM).

  • hot cloning

    Hot cloning is a cloning method that takes place while the server OS is running.

  • HP Virtual Server Environment (HP VSE)

    The HP Virtual Server Environment (HP VSE) is a server virtualization product developed by Hewlett-Packard (HP) to optimize resource utilization in their HP Integrity and HP 9000 servers... (Continued)

  • Hyper-V Replica

    Hyper-V Replica is a free disaster recovery tool in Hyper-V 3.0 that creates and maintains copies of virtual machines (VMs ). In the event of a catastrophic loss, an administrator can failover to the replica VMs and provide business continuity.

  • hypervisor

    A hypervisor is a function which abstracts -- isolates -- operating systems and applications from the underlying computer hardware.

  • I

    I/O fencing (input/output fencing)

    I/O (input/output) fencing is the isolation of a malfunctioning node from a cluster's shared storage to protect the integrity of data.

  • Intel VT (Virtualization Technology)

    Intel VT (Virtualization Technology) is the company's hardware assistance for processors running virtualization platforms.

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