magtape — Apollo

MAGTAPE -- Magnetic Tape Usage Information                  83/08/01


  A DOMAIN network may read and write data residing on 9-track magnetic tapes
  formatted to a density of 1600 bits per inch.  Tapes may be either ANSI
  labeled or unlabeled, with files of ASCII, EBCDIC, or raw characters.
  The following general restrictions apply:

      .  You must perform the tape operations on the node to which the tape
         drive is attached.

      .  Only one tape drive may be attached to any particular node.

  The following commands are supplied for use with magnetic tapes:

      .  WBAK (WRITE_BACKUP) writes one or more object trees to a magtape
         'backup file'.  Magtapes written with this program may be used
         for backup, or to interchange files with other DOMAIN installations.

      .  RBAK (READ_BACKUP) indexes or restores to disk the contents of a
         backup file written with the WBAK command.

      .  RWMT (READ_WRITE_MAGTAPE) transfers files between disk and magtape.
         Use this command to interchange files with other, non-DOMAIN
         installations.

      .  EDMTDESC (EDIT_MAGTAPE_DESCRIPTOR_FILE) creates and modifies magtape
         descriptor files.

  Help is available for all of these commands.  Type 'HELP' followed by the
  relevant command name for more information.

  The RWMT and WBAK commands support automatic volume ID generation for
  labeled tapes. Type HELP MAGTAPE VOLID for more information on this feature.
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