Hardware

The hardware resource mainly is configuration information associated with a physical hardware environment. The hardware resource on the cloud mainly includes:

• Zone: The largest resource definition in ZStack, including cluster, L2 network, primary storage, and other resources. Generally, a zone corresponds to an equipment room of a data center.
• Cluster: A logical group of hosts (compute nodes). Generally, a cluster corresponds to a rack.
• Host: A host that provides compute, network, and storage resources for VM instances.
• Primary storage: A storage server used to store VM disk files (including root volume, disk volume, snapshot, and image cache). The supported primary storage types include LocalStorage, NFS, Shared Mount Point, Ceph, and Shared Block.
• Backup storage: A storage server used to store VM image templates (including ISO). The supported backup storage types include ImageStore, SFTP (only for ZStack Community), and Ceph.
• SAN storage: LUN devices that are virtually split on an iSCSI-SAN or FC-SAN storage. These devices can be passed through directly to VM instances or can be added as Shared Block primary storages.