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About Pods
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For each zone, the administrator must decide the following.
• How many pods to place in a zone.
• How many clusters to place in each pod.
• How many hosts to place in each cluster.
• (Optional) If zone-wide primary storage is being used, decide how many primary storage servers to
place in each zone and total capacity for these storage servers. (Supported for KVM and VMware
hosts)
• How many primary storage servers to place in each cluster and total capacity for these storage
servers.
• How much secondary storage to deploy in a zone.
When you add a new zone, you will be prompted to configure the zone’s physical network and add the
first pod, cluster, host, primary storage, and secondary storage.
(VMware) In order to support zone-wide functions for VMware, CloudPlatform is aware of VMware
Datacenters and can map each Datacenter to a CloudPlatform zone. To enable features like storage
live migration and zone-wide primary storage for VMware hosts, CloudPlatform has to make sure
that a zone contains only a single VMware Datacenter. Therefore, when you are creating a new
CloudPlatform zone, you can select a VMware Datacenter for the zone. If you are provisioning multiple
VMware Datacenters, each one will be set up as a single zone in CloudPlatform.
Note
If you are upgrading from a previous CloudPlatform version, and your existing deployment
contains a zone with clusters from multiple VMware Datacenters, that zone will not be forcibly
migrated to the new model. It will continue to function as before. However, any new zone-wide
operations introduced in CloudPlatform 4.2, such as zone-wide primary storage and live storage
migration, will not be available in that zone.
3.3. About Pods
A pod often represents a single rack. Hosts in the same pod are in the same subnet. A pod is the
third-largest organizational unit within a CloudPlatform deployment. Pods are contained within zones,
and zones can be contained within regions. Each zone can contain one or more pods. A pod consists
of one or more clusters of hosts and one or more primary storage servers. Pods are not visible to the
end user.