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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  • P

    physical block device (PBD)

    In a Citrix XenServer, a physical block device (PBD) is a connector object that represents the interface between a physical host and an attached storage repository.

  • physical to virtual (P2V)

    Physical to virtual (P2V) is a term that refers to the migration of an operating system (OS), application programs and data from a computer's main hard disk to a virtual machine.

  • PlateSpin

    PlateSpin is a company that provides tools to help with server virtualization, including physical-to-virtual migrations and server workload management. 

  • platform

    A computer platform is an underlying computer system on which application programs can run, or, in general, any base of technologies on which other technologies or processes are built.

  • PowerPC

    PowerPC is a microprocessor architecture that was developed jointly by Apple, IBM, and Motorola.

  • R

    Red Hat Storage (RHS)

    Red Hat Storage is a new distributed file system based on the Gluster file system.

  • Red Hat Virtualization (RHV)

    Red Hat Virtualization (RHV) is an enterprise-class virtualization platform produced by Red Hat.

  • RHCVA (Red Hat Certified Virtualization Administrator)

    The Red Hat Certified Virtualization Administrator (RHCVA) is a certification exam from Red Hat, Inc.

  • root partition

    A root partition is the isolated area in a Microsoft Hyper-V environment where the hypervisor runs. The root partition is the first one created; it runs the hypervisor and can access devices and memory directly.

  • S

    server hardware degradation

    Server hardware degradation is the gradual breakdown of the physical parts of a server.

  • server virtualization

    Server virtualization is the masking of server resources, including the number and identity of individual physical servers, processors, and operating systems, from server users.

  • service virtualization

    Service virtualization is the process of creating replicas of systems that new applications depend on to test how well the application and systems integrate.

  • shared nothing live migration

    Shared nothing live migration is a term used to describe the process of moving a virtual machine (VM) from one physical host to another, without the need for clustering or a common shared storage location.

  • smart paging

    Smart paging is an advanced version of memory paging in Windows Server 2012 Hyper-V, where a virtual machine is capable of temporarily using hard disk space to supplement shortages of solid-state memory.

  • SPARC (Scalable Processor Architecture) 

    SPARC (Scalable Processor Architecture) is a 32- and 64-bit microprocessor architecture from Sun Microsystems that is based on reduced instruction set computing (RISC).

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