NetApp
Cluster-Mode System Manager Help : Cluster-Mode : System Manager : Understanding System Manager : Storage system discovery

Storage system discovery
The Discover Storage Systems dialog box lists all storage systems discovered by System Manager. You can use this dialog box to discover storage systems or a high availability pair on a network subnet and add them to the list of managed systems.
When you add one of the systems in a high availability pair, the partner system is automatically added to the list of managed systems. You can type the IP address in any of the following formats: A.B.C.D, A.B.C, A.B.C.*, or A.B.C.D/24.