Removable Storage Manager
Applies To: Windows 7
After being reduced to an optional component in previous releases of the Windows and Windows Server operating systems, Removable Storage Manager (RSM) has been removed. Windows Backup no longer supports writing directly to sequential (tape) backup devices so RSM is no longer required. Third-party backup software does not use RSM, but manages backup device objects directly.
Additional references
For more information, see Removable Storage Managerin the MSDN Library (https://go.microsoft.com/fwlink/?LinkId=165704).