Windows Server Definitions

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

  • S

    swap file (swap space or pagefile)

    A swap file (or swap space or, in Windows NT, a pagefile) is a space on a hard disk used as the virtual memory extension of a computer's real memory (RAM).

  • system

    A system is a collection of elements or components that are organized for a common purpose.

  • System Insights

    System Insights is a feature that debuted in Windows Server 2019 that processes data and uses predictive analytics to warn administrators of potential issues with Windows Server deployments.

  • System Restore

    System Restore is a utility to protect and revert the Windows client operating system to a previous state -- known as a restore point -- undoing system changes made since that time to avoid a reinstall of the operating system.

  • T

    taskbar

    In the graphical user interface (GUI) for a computer operating system or application, a taskbar is a visual device on the desktop that typically shows the user which applications (tasks) are currently active and running.

  • TCPView

    TCPView is a Windows network monitoring utility that shows a graphical representation of all currently active TCP and UDP endpoints on a system.

  • Terminal Server product or Microsoft Windows Terminal Server (WTS)

    The Microsoft Windows Terminal Server (WTS) is a server program running on its Windows NT 4.0 (or higher) operating system that provides the graphical user interface (GUI) of the Windows desktop to user terminals that don't have this capability themselves.

  • thunk

    Thunk is programming that converts 16-bit memory address space into 32-bit memory address space and vice versa.

  • transitive trust

    Transitive trust is a two-way relationship automatically created between parent and child domains in a Microsoft Active Directory forest.

  • TweakUI

    TweakUI is a software utility that lets Windows 9x, Windows NT, and Windows 2000 users modify the desktop user interface and other system characteristics to their liking.

  • U

    update sequence number (USN)

    An update sequence number (USN) is a 64-bit number in Active Directory that increments time as changes occur. Local counters on every domain controller assign USNs.

  • USB 3.0 (SuperSpeed USB)

    USB 3.0, also known as SuperSpeed USB, is the next major revision of the Universal Serial Bus (USB).

  • V

    verbose logging

    Verbose logging is a computer logging mode that records more information than the usual logging mode.

  • VHDX (Hyper-V virtual hard disk)

    VHDX is a Hyper-V virtual hard disk (VHD) format found in Windows Server 2012.

  • virtual desktop manager

    A virtual desktop manager is a program that allows a computer user to have more than one user interface available simultaneously on a single computer.

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