David:
 
     I manage a KS959/300 that also has an internal C1504B DDS drive.  I only
     very recently learned how to enable "hardware compression" on the drive.
     HP has a command file in the TELESUP account that enables/disables both
     compression and auto-eject of the tape.
 
     You can get the particulars on the command file by simply PRINTing
     DEVCTRL.MPEXL.TELESUP.
 
     Regards,
 
     John Hornberger
     Sr. Systems Programmer
     General Signal Services
 
______________________________ Forward Header __________________________________
Subject: DDS Compression
Author:  David Kallman <[log in to unmask]> at Internet2
Date:    8/16/96 9:39 AM
 
 
Just installed a 959/200 with a internal C1504B 8GB DDS drive.  I had
assumed (incorrectly of course) that this drive would
accept 120 meter tapes.  To my question: does this drive perform its 4 to 1
compression (90 meter backs up 2 GB native)
only with software based compression - tubostore:compress=high, or does it
use a conjunction of hardware & software compression.
 
TIA
 
 
Dave Kallman
See's Candies, Inc.