The answer is indeed no and if the drive is set to disable compression period then DEVCTRL will not work. FYI, you may set
compression to always enabled under host control, always enabled not under host control, always disabled, under host control
and always disabled not under host control; read your manual YMMY.

Paul Courry

On Mon, 19 Apr 1999 15:02:45 EDT, Wirt Atmar wrote:

>Brad writes:
>
>> HP just installed a new 929 at our site with a DDS-3 drive.  I was unable to
>> see how they configured compression and MRS dip switches, is there a
>> command to see what this is set at?
>
>It is my strong impression that the answer is no.
>
>The only option seems to be to set the compression mode you want every time
>before you make tapes -- or disassemble the machine and set the DIP switches
>on the bottom of the drive. The job that we use to assure ourselves of the
>proper compression mode is:
>
>     !job decomp,mgr.telesup,mpexl
>     !devctrl 7 compression=disable
>     !set stdlist=delete
>     !eoj
>
>Wirt Atmar
>