70 lines
2.8 KiB
XML
70 lines
2.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="desktop-as-a-service">
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<?dbhtml stop-chunking?>
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<title>Desktop-as-a-Service</title>
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<para>Virtual Desktop Infrastructure (VDI) is a service that hosts
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user desktop environments on remote servers. This application
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is very sensitive to network latency and requires a high
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performance compute environment. Traditionally these types of
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environments have not been put on cloud environments because
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few clouds are built to support such a demanding workload that
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is so exposed to end users. Recently, as cloud environments
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become more robust, vendors are starting to provide services
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that allow virtual desktops to be hosted in the cloud. In the
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not too distant future, OpenStack could be used as the
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underlying infrastructure to run a virtual infrastructure
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environment, either in-house or in the cloud.</para>
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<section xml:id="challenges">
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<title>Challenges</title>
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<para>Designing an infrastructure that is suitable to host virtual
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desktops is a very different task to that of most virtual
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workloads. The infrastructure will need to be designed, for
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example:</para>
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<itemizedlist>
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<listitem>
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<para>Boot storms: What happens when hundreds or
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thousands of users log in during shift changes,
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affects the storage design.</para>
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</listitem>
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<listitem>
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<para>The performance of the applications running in these
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virtual desktops</para>
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</listitem>
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<listitem>
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<para>Operating system and compatibility with the
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OpenStack hypervisor</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="broker">
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<title>Broker</title>
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<para>The connection broker is a central component of the
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architecture that determines which remote desktop host will be
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assigned or connected to the user. The broker is often a
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full-blown management product allowing for the automated
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deployment and provisioning of remote desktop hosts.</para>
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</section>
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<section xml:id="possible-solutions">
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<title>Possible solutions</title>
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<para>
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There are a number of commercial products available today that
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provide such a broker solution but nothing that is native in
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the OpenStack project. Not providing a broker is also
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an option, but managing this manually would not suffice as a
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large scale, enterprise solution.
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</para>
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</section>
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<section xml:id="diagram">
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<title>Diagram</title>
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<mediaobject>
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<imageobject>
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<imagedata fileref="../images/Specialized_VDI1.png"/>
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</imageobject>
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</mediaobject>
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</section>
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</section>
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