taccess(1)                     DG/UX R4.11MU05                    taccess(1)


NAME
       taccess - initiate access to labeled tape

SYNOPSIS
       taccess [ -a ADN ] [ -d density ] [ -f length ] [ -l IBM|ANSI|UN ] [
       -p pseudo ] [ -v vsnlist ] [ -z ]

DESCRIPTION
       Taccess must be used before any other REELexchange commands can be
       used.  It initializes access to the specific tapeset and tape drive.
       Through it, the user identifies the tapeset and its characteristics:
       density, length, tape format.  Also, the user specifies the Volume
       Serial Number(s) (VSNs) for the tape volume(s) in a labeled tapeset.
       If a multi-volume tapeset is being processed, then the full list of
       VSNs must be named.

OPTIONS
       -a ADN "Tape Drive." Specifies which tape drive to use.  The name
              specified should be one of the ADN files from the
              /var/reelexchange/Adn directory.  If this option is not
              specified, the tape drive named in the file
              /var/reelexchange/default.adn will be used.  See
              reelexchangeintro(1) for more information on the format of
              ADN files.

       -d density
              "Density." The density in bpi of the tape.  Common values are
              1600, 3200, and 6250.  The density specified here should match
              the density field in the ADN file of the tape drive that is
              being accessed.  Default density is 1600.

       -f length
              "Length." The length of the tape in feet less 100 feet error
              margin.  Common values are 700, 1100 and 2300.  Default length
              is 1400.

       -l     "Format." Specifies the format of the tape - either IBM, ANSI,
              or UN for unlabeled tapes.  Default format is ANSI.

       -p pseudo
              "Tapesetname." Defines an arbitrary alphanumeric name by which
              the tapeset is referenced during the current session.  By
              default,REELexchange calls each tape default.

       -v vsnlist
              "Tapeset." vsnlist is a comma separated list of VSNs.  This
              list should be the order of tapes in the tapeset if the
              current tape being introduced by taccess is part of a
              multivolume tapeset.

       -z     "No Prompt." Normally, after a session has been established
              via the taccess command, the first command of the session that
              requires physical access to the tape will display a prompt
              which instructs you to mount the tape.  If -z is specified,
              this prompt will be suppressed.

FILES
       /var/reelexchange/default.adn File containing name of default tape
                                     drive.
       /var/reelexchange/tapecap     File containing descriptive entries for
                                     all tape drives supported by
                                     REELexchange.
       /var/reelexchange/Adn/*       Each file in this directory describes a
                                     tape drive on the system.  The name of
                                     one of these files is given with the -a
                                     option to specify a particular tape
                                     drive for I/O.
       /var/reelexchange/dibm       IBM label defaults.
       /var/reelexchange/dansi      ANSI label defaults.

SEE ALSO
       reelexchangeintro(1), tdisplay(1), tkey(1), tlabel(1), tposn(1),
       tread(1), trelease(1), tsniff(1), twrite(1).


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