Microsoft Knowledge Base Article 301588 contains the following summary:
This article describes how to configure Distributed File System (DFS) on a Windows server cluster to maintain a single
namespace for file shares. This configuration makes it easier for users and administrators to remember where files are located,
maintain highly available file servers, and host file shares across multiple nodes for scalability.
The scenario in this section describes how to create a clustered file server for four different groups while maintaining a single connection point.