Syntax option:

    BACKUP FILENAME backup-file-spec

    Specifies the default file specification to be used by the backup
    server.

    During execution, the backup server and the RMU Backup After_
    Journal command use this file specification as the name of the
    backup file. You can override this value by specifying a file
    name for the journal file using the RMU Backup After_Journal
    command.