On Mon, Jul 16, 2001 at 02:25:58PM -0500, C. Chan wrote:
> Also Sprach Tom Strickland:
> > > The DDS4 drives are Wide SE. The HP DAT40 I have doesn't integrate
> > > an internal terminator on its controller board. So you will need to
> > > terminate the chain with a SE Wide terminator, or a LVD Multimode Wide
> > > terminator.
> > Thanks - I thought as much.
> > Actually, we've been sent an Adaptec 2940U, which is not a wide SCSI
> > card. The supplier tells me that this will do for just the 1 DAT
> > drive. The trouble is that they haven't supplied the 68-to-50 pin
> > adapter either. This isn't helping my schedule!
> The 2940U can be used with wide devices, albeit with caveats.
> You will have the best results keeping the chain as short
> as possible, and putting the 50 pin devices first, then the
> wide devices, and terminating with a wide connector. Good luck!
It's after office hours now, so I'm just tidying up a few details so
that I can nail this tomorrow when I talk to my supplier.
There are no plans to put any other devices on the same chain. I am
slightly confused about the 'terminating with a wide connector' bit. I
was planning on terminating with a narrow connector. Are you
suggesting that I terminate with a wide connector, adapted with
another 68-to-50 pin adapter? This would give the following config:
____________________________________ <---- Utlra-SCSI cable
| | |
| | |
Adaptec 68>50pin_adapter 68>50pin_adapter
| |
HP_DAT wide_terminater
Sorry to appear so pedantic, but I am about to move jobs. This is the
last thing that I need to do here and I'm running out of time. I can't
afford any more mistakes (and I still need time to test).
Thanks,
Tom
