The DFS Namespaces role service enables you to group shared folders that are located on different servers into one or more logically structured namespaces.
<ClassType ID="Microsoft.Windows.FileServer.DFSN.2008R2.RoleService" Accessibility="Public" Abstract="false" Base="DFSNLib!Microsoft.Windows.FileServer.DFSN.RoleService" Hosted="true" Singleton="false"/>