A Tape Server performs backup tasks to tape media in conjunction with Storage Server backup tasks. Either one or more Tape Servers can be configured in one system. The AdvancedCopy Manager Tape Manager must be installed on a Tape Server. ETERNUS SF TSM (hereafter referred to as TSM) is also installed on a Tape Server. TSM is a file backup management product which is called internally by the Tape Server to perform backup management.