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Chapter 2. Concepts
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• Zone: Typically, a zone is equivalent to a single datacenter. A zone consists of one or more pods
and secondary storage.
• Pod: A pod is usually one rack of hardware that includes a layer-2 switch and one or more clusters.
• Cluster: A cluster consists of one or more hosts and primary storage.
• Host: A single compute node within a cluster. The hosts are where the actual cloud services run in
the form of guest virtual machines.
• Primary storage is associated with a cluster, and it can also be provisioned on a zone-wide basis. It
stores the disk volumes for all the VMs running on hosts in that cluster.
• Secondary storage is associated with a zone, and it can also be provisioned as object storage that
is available throughout the cloud. It stores templates, ISO images, and disk volume snapshots.
More Information
For more information, see Chapter 3, Cloud Infrastructure Concepts.
2.3.3. Networking Overview
CloudPlatform offers two types of networking scenario: