[ale] Adaptec 29160 termination problems

[Jeff Hubbs]

Gary -

I know that a 50-pin device cannot be used to terminate a 68-pin bus.  I
don't have any exper with the 29160 nor using cards that have both 68-
and 50-pin connectors, but what I think might be happening is that the
50-pin connector and the 68-pin connector are on the same bus.  Check
your docs carefully as to whether or not you can only use one of those
connectors at a time.  I get the feeling that if you connect a
three-position 68-pin cable to the corresponding connector on the card,
put the HD with termination enabled on the other end of the cable, and
then put the tape drive with termination disabled on the middle
connector via a 68/50 adaptor, you'll be just fine.

- Jeff

"Gary S. Mackay" wrote:
> 
> I just built a new server using the Adaptec 29160 SCSI card with an IBM
> UltraStor 18gig drive. The drive is connected to the 68pin primary connector.
> All was fine until I connected an HP DAT24i tape drive to the 50pin secondary
> connector. Now I get a "Attention! Insufficient termination detected on SE
> devices" error message every time I boot. Oddly enough, everything works just
> fine. The Tapeware software preforms backups,verifies, and restores just fine.
> The system boots and runs fine also. No problems other than the message. I
> presume I should be worried??
> 
> Things I've tried so far:
> 1. YES, I DID CHECK each of the jumper settings for termination.
>    All is well. HD is on 0, tape is on 3.
> 2. Changed the scsi bios (ctrl-a) settings for termination to every option I
> could find.
>    No difference.
> 3. For kicks and grins, I changed jumper settings on tape drive.
>    No difference.
> 4. Punt?
> 
> - Gary
> 
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