Adaptec termination problem...

[Robert G. Brown]

On Sat, 23 May 1998, OLK wrote:

> There is one special with Adaptec-controllers and IBM.
> The best is to give the IBM's the smallest ID's eg. 0/1/2 and the
> the rest scsi-devices bigger ones.
> If possible try to not terminate the IBM's but the CDR's or others.
> This had allways helped (for me and friends at least).

Small SCSI ID is already in place (it is 0) but the IBM has a 68 pin
interface and the HP DAT and CDR are 50 pin -- on different cables.
The CD-R has real, live termination resistors (bless 'em) so you can
see that the drive really-oh, truly-oh terminates the 50 pin chain (and
the HP has clearly documented termination settings and is
unterminated).  The IBM, all by itself on a fast/wide/68 pin cable,
must, therefore, be terminated.  Using IBM's website, I MAY have found
the correct jumper settings.  Stay tuned...

   rgb

Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu




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