AHA2790UW has speed-limit problems ?

[Justin T. Gibbs]

>   Four Ultra-Wide (SingleEnded) disks on high quality cable inside
> DEC PWS 433a workstation chassis attached to AHA2940UW host adapter.

How long is this cable.  How far apart are the connectors in the chain.
Have you tried using a "forced perfect" terminator?

> The Kludge-Cure:
> 
>   Lower the speed of the device in the adapter bios configuration
> utility.  In fact lower them all, and no SCSI-timeout problems appear.

This would indicate bus signal quatlity problems at high speeds.

> Question:
> 
>   Is there ANYTHING that is possible to do to in this type of environment
> so that I could (reliably) run faster disk-transfer speeds ?

Shorten the cables.  Ensure that the distance between all connectors on
the cable are equal.  Use a forced perfect terminator.

--
Justin

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