Library /sys$common/syshlp/BKM$HELP.HLB  —  Tape labels
    Tape label(s) field

    The term tape label refers to the software label name of up to six
    characters you supply for a tape.  The term does not apply to a label
    you physically attach to the tape. Tape labels allow BACKUP Manager
    to identify a tape and determine its characteristics.

    Label your tapes according to the data contained on the tapes.  The
    following table shows some suggestions for labeling tapes:

        Label              Type of Backup
        ------   ----------------------------------
        DLY101   Daily,   Group 1, Volume Number 01
        DLY102   Daily,   Group 1, Volume Number 02
        WKY101   Weekly,  Group 1, Volume Number 01
        WKY201   Weekly,  Group 2, Volume Number 01
        MTH101   Monthly, Group 1, Volume Number 01
        YRY101   Yearly,  Group 1, Volume Number 01

    After mounting a tape, BACKUP Manager processes information stored in
    the tape-volume header record before writing to the tape.
    Specifically, BACKUP Manager does the following:

    ·  Checks the tape-volume protection information to ensure that you
       have the right to access the volume in the manner you requested.

    ·  Checks the tape expiration date to prevent you from initializing a
       tape that has not yet expired.

    ·  Compares the tape volume label you specify to the tape volume
       label of the tape to ensure that you do not create a save set on
       the wrong tape.  BACKUP Manager uses the following guidelines when
       processing tape labels:

        -  If you specify a label that is longer than six characters,
           BACKUP Manager truncates (shortens) the label to the first six
           characters.

        -  If the volume label is fewer than six characters long, BACKUP
           Manager adds spaces to lengthen the label to six characters.

        -  The first four characters of the tape volume label either
           (a) must match the first four characters of the label you
           specified, or (b) must end with one or more underscore characters.
           For example, the volume label ABN_ matches the ABN label
           specification but does not match the ABNE label.

        -  If the fifth and sixth characters of the tape volume label are
           numbers between 0 and 9, BACKUP Manager does not compare these
           characters with corresponding characters in the label you
           specified.  Otherwise, the fifth and sixth characters in the
           tape volume label must match the corresponding characters in
           the label specified in the BACKUP Manager command line.
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