Adaptec SCSI controller problem

[Andy Farkas]

On Sat, 10 May 2003, Doug Hardie wrote:

> I have a system with a Adaptec 2940 Ultra SCSI adapter controller.  The
> original configuration had 1 disk internal and nothing external.  The
> external connector had nothing plugged into it.  All worked fine.
> However, I tried to add a DLT drive to the external connector.  On
> boot, the system hung because it couldn't find the disk.  Its supposed
> to  boot off the SCSI drive.  Running the adaptec scsi utilities it
> found both the internal disk and the external DLT drive.  The disk has
> id 0, the DLT 5 and the controller 7.  So, I removed the cable from the
> system as I just didn't have time to address that issue at the moment.
> However, it still hung at the same point in the boot.  No sequence of
> disconnection of cards, disks, connectors etc. would bring back the
> boot capability.  It consistently gets an error message that there is
> no terminator.  So, I added a terminator on the external jack.  It now
> boots properly.  Something has obvioulsy changed but I can't figure out
> what it is.  I still need to use the DLT - with the drive, and I need
> to return the terminator as its borrowed.  Any ideas on how to make
> this work?  Thanks.

Turn off termination on the card (using bios uitility).

Make sure both the disk and the dlt drive have termination enabled.

--

 :{ andyf at speednet.com.au

        Andy Farkas
    System Administrator
   Speednet Communications
 http://www.speednet.com.au/