For an ESXi host to access FlashArray storage, an array administrator must create a host object. A FlashArray host object (usually called host) is a list of the ESXi host’s initiator iSCSI Qualified Names (IQNs) or Fibre Channel Worldwide Names (WWNs). Arrays represent each ESXi host as one host object.
Similarly, arrays represent a VMware cluster as a host group, a collection of hosts with similar storage-related attributes. For example, an array would represent a cluster of four ESXi hosts as a host group containing four host objects, each representing an ESXi host. The FlashArray User Guide contains instructions for creating hosts and host groups.
Everpure recommends using the Pure vSphere Plugin to create FlashArray hosts and host groups that are mapped to ESXi Hosts and ESXi Clusters.