OneFS communicates with VMware vSphere through VMware vSphere API for Storage Awareness (VASA).

VASA support enables you to view information about Isilon clusters through vSphere, including Isilon-specific alarms in vCenter. VASA support also enables you to integrate with VMware profile driven storage by providing storage capabilities for Isilon clusters in vCenter. For OneFS to communicate with vSphere through VASA, your VMware environment must include ESXi 5.0 or later hypervisors.