The NameFormat property identifies how the Name of the AdminDomain is generated, using the heuristic specified in the CIM ...

The NameFormat property identifies how the Name of the AdminDomain is generated, using the heuristic specified in the CIM V2 System Model specification. The property assumes that to determine and assign a Name the documented rules are traversed in order. The NameFormat Values list defines the precedence order for assigning the Name of the AdminDomain. 

"FC" has been deprecated and replaced by "WWN" to be consistent with the other ValueMaps.