An entry (conceptual row) in the cFcSdvVirtRealDevMapTable. Each entry represents a Real Device(s) mapped to a Virtual Device for virtualization within the scope of a VSAN. When the Real Device represented by an entry in this table whose instance of cFcSdvVirtRealDevMapType is 'primaryDevMap' comes on-line, the corresponding Virtual Device that virtualizes such Real Device also comes on-line and registers itself as one of logged-in devices in the FCNS database - an entry into 'fcNameServerTable' of CISCO-NS-MIB and SW_RSCN and RSCN are appropriately generated.