Mark Ranft writes



Paul,

We are not using labeled taps and have already exceeded the 65K file
limit you mention.  To the best of my knowledge all of the DLTs are in
'compressed' and '40.0' mode.  (I am double verifying this now.)

I am including specifics of the STORE command, the end of the STORE
summary and a peak at DISCFREE C to help complete the picture.

I really don't want to have operator intervention more than once a day
for tape handling.  And I do not want to double the size of my DLT 8000
tape library.

Here is the STORE command (after I added STATISTICS NOTE: I'll have more
stats tomorrow):

!  store @[log in to unmask]@;*t;show;progress=1;online=start; &
!    inter ; maxtapebuf ; statistics ; &
!    compress=low;onvs=mpexl_system_volume_set,uservs;directory

You state that you let the DLT8000 do the compression, however you've got a
989/650 a mighty powerful beast.  Why don't you turn compression off on the
DLT (XEQ DEVCTRL.MPEXL.TELESUP nn COMPRESSION=DISABLE) and use software
compression with compress=high.  You'll benefit by have a much smaller
amount of bytes going down the line to the tape drives, and your powerful
machine should be able to keep up with the compression to keep the tape
constantly moving.

Mike Berkowitz
Guess? Inc.

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