Rewind
    Norewind

    Specifies that the magnetic tape that contains the backup file
    will be rewound before processing begins. The tape will be
    initialized according to the Label and Density qualifiers. The
    Norewind qualifier is the default and causes the backup file to
    be created starting at the current logical end-of-tape (EOT).

    The Rewind and Norewind qualifiers are applicable only to tape
    devices. RMU Backup returns an error message if these qualifiers
    are used and the target device is not a tape device.