- Many organizations today are consolidating older file servers to reduce the cost of managing multiple file servers and to increase the efficiency of storage allocation and backup tasks. When organizations migrate data to file servers running Windows Server® 2003 and Windows Server 2008, they can take advantage of new features, such as Shadow Copies for Shared Folders and the Volume Shadow Copy service, and enhancements to other technologies, such as Distributed File System (DFS).
Here is an interesting article that explain how to utilize it (note on microsoft article 2012 seems not be supported by this tool):
http://blogs.technet.com/b/canitpro/archive/2014/11/06/step-by-step-migrating-a-2003-file-server-with-microsoft-file-server-migration-toolkit.aspx
