When you first run Virtual Storage Console (VSC) in a vSphere Client, VSC discovers ESXi hosts, their LUNs and NFS exports, and the NetApp storage systems that own those LUNs and exports.
You can discover new storage systems or update information about existing storage systems to obtain the latest capacity and configuration information at any time. You can also modify the credentials that VSC uses to log in to the storage systems.
While discovering the storage systems, VSC collects information from the ESXi hosts that are managed by the vCenter Server instance.