@(#) Shows how to back up user files to tape.

> Using tar (tape archive)
  - The following procedure will back up all files in the
    subdirectory <subdir> to tape.  Note that all tape
    drives connected to physgi01 are located in Rm 1-240
    of Building 510.
    1) Obtain an 8-mm data grade tape.  These are available
       from BNL Supply and Materiel as stock number
       S-26434.
    2) Allocate a tape drive using the `tapeman' utility.
       (See /usr/info/HOWTO.usetape for more information on
       tapeman.  The tapeman show command is first used to
       find out which drives are available, then the tapeman
       alloc command is used to allocate the drive.  <dev>
       corresponds to the labels affixed to the drive
       cabinets.
         # tapeman show
         # tapeman alloc <dev>
    3) Load the tape into the drive, making sure that the
       write protect slide is in the `rec' position.   
    4) Go to the subdirectory to be backed up and run tar:
         # cd <subdir>
         # tar -cvf <dev>nsv.high <subdir>
    5) Deallocate the drive after tar finishes.

  - Example:
       If the tape drive mx1 has been allocated and the
    subdirectory to be backed up is /usr1/people/smith/data,
    use the following:
         # tapeman show
         mx0 : allocated to : e787 E787 5692 05/04/93 10:07:39
         mx1 : allocated to : gaius gaius 5692 05/04/93 09:30:56
         mx2 : allocated to : meehan meehan 3776 05/04/93 09:46:46
         mx3 : available
         mx4 : allocated to : root Tom Nepsee x3886 04/19/93 10:35:42
         mx5 : allocated to : e787 E787 5692 05/04/93 10:07:37
         mx6 : allocated to : gaius gaius 5692 05/04/93 09:30:55
         # tapeman alloc mx3
         # cd /usr1/people/smith/data
         # tar  -cvf /dev/mx3nsv.high .
         # tapeman dealloc mx3