mirror of
https://github.com/apache/cloudstack.git
synced 2025-11-02 11:52:28 +01:00
22 lines
1.6 KiB
XML
22 lines
1.6 KiB
XML
<section id="cloud_infrastructure_overview">
|
|
<title>Cloud Infrastructure Overview</title>
|
|
<para>
|
|
The Management Server manages one or more zones (typically, datacenters) containing host computers where guest virtual machines will run. The cloud infrastructure is organized as follows:
|
|
</para>
|
|
<itemizedlist>
|
|
<listitem><para>Zone: Typically, a zone is equivalent to a single datacenter. A zone consists of one or more pods and secondary storage. See About Zones.</para></listitem>
|
|
<listitem><para>Pod: A pod is usually one rack of hardware that includes a layer-2 switch and one or more clusters. See About Pods.</para></listitem>
|
|
<listitem><para>Cluster: A cluster consists of one or more hosts and primary storage. See About Clusters.</para></listitem>
|
|
<listitem><para>Host: A single compute node within a cluster. The hosts are where the actual cloud services run in the form of guest virtual machines. See About Hosts.</para></listitem>
|
|
<listitem><para>Primary storage is associated with a cluster, and it stores the disk volumes for all the VMs running on hosts in that cluster. See About Primary Storage</para></listitem>
|
|
<listitem><para>Secondary storage is associated with a zone, and it stores templates, ISO images, and disk volume snapshots. See About Secondary Storage.</para></listitem>
|
|
</itemizedlist>
|
|
<mediaobject>
|
|
<imageobject>
|
|
<imagedata fileref="./images/infrastructure_overview.png" />
|
|
</imageobject>
|
|
<textobject><phrase>infrastructure_overview.png: Nested organization of a zone</phrase></textobject>
|
|
</mediaobject>
|
|
</section>
|
|
|