You can create a host automatically or manually. To make it easier to give multiple hosts access to the same volumes, you can also create a host cluster.
Create host automatically
You can allow the Host Context Agent (HCA) to automatically detect the hosts, and then verify that the information is correct. Creating a host is one of the steps required to let the storage array know which hosts are attached to it and to allow I/O access to the volumes.
Create host manually
For hosts that cannot be automatically discovered, you can manually create a host. Creating a host is one of the steps required to let the storage array know which hosts are attached to it and to allow I/O access to the volumes.
Create host cluster
You create a host cluster when two or more hosts require I/O access to the same volumes.
Create volumes
You create volumes to add storage capacity to an application-specific workload, and to make the created volumes visible to a specific host or host cluster. In addition, the volume creation sequence provides options to allocate specific amounts of capacity to each volume you want to create.
Assign volumes to hosts
You must assign a volume to a host or a host cluster so it can be used for I/O operations. This assignment grants a host or host cluster access to one or more volumes in a storage array.