• WHAT IS AN APP-V PACKAGE?

    An App-V package is the next generation of an application installation. Apart from some specialized scenarios, most applications prior to the introduction of App-V were simply “installed” on a user’s workstation and the state of the installation remains largely static unless the user or their network administrator choose to force the application to upgrade,
    update, etc. An App-V package is much more dynamic in that it can be
    custom designed to

    » Reside completely on a user’s workstation
    » Partially on a user’s workstation and partially on a server
    » Completely on a server only allowing access to the application from the user’s workstation
    » And many variances in-between.

    This approach allows you to efficiently maintain an App-V package. For example, an App-V package can be designed to install completely on a user’s workstation and still regularly “check-in” to the App-V infrastructure to look for updates, and then apply those updates in the background without impacting the user’s experience of the application.

    Isolating an application addresses application compatibilities that otherwise would make it impossible to run two applications on the same workstation. An example of this is two different applications, each requiring a different version of the Java runtime. Prior to App-V, installing both applications on the same desktop caused pain and frustration. App-V allows you to package an application together with its prerequisites, and then stream the collective package to a workstation without the need to actually “install” anything on the user’s workstation. You can do this for any or all applications, including two different versions of the same program.


    Application Virtualization Sequencer
    The Sequencer is a wizard-based tool; App-V administrators will come to
    use and appreciate more than any other function in the App-V world. The
    Sequencer is used to create App-V sequenced applications and produce an
    application “package.” A package consists of several files, including

    » A sequenced application (.sft) file
    » Open Software Description (.osd) “link” files
    » Icon (.ico) files
    » A manifest xml file that can be used to distribute sequenced applications with electronic software delivery (ESD) systems
    » A project (.sprj) file

    The Sequencer can also be used to build Windows Installer files (.msi) for deployment to clients configured for stand-alone operation. The .sft, .osd, and .ico files are stored in a shared content folder on the Management Server and are used by the App-V client to access and run sequenced applications.


    Application Virtualization Client
    The App-V Client is required on endpoint devices receiving applications from the App-V environment. It allows for management of package streaming on the client device; such as how much local cache is to be used by the application. It also manages how often the application checks in for any changes, and any user-specific configuration settings.

    Source of Information : Elsevier-Microsoft Virtualization Master Microsoft Server Desktop Application and Presentation


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