Narrow devices on a wide bus

Vit Novak Vit.Novak at Eng.Sun.COM
Wed Apr 10 13:36:09 PDT 1996

* From the SCSI Reflector, posted by:
* Vit.Novak at Eng.Sun.COM (Vit Novak)
> * From the SCSI Reflector, posted by:
> * Ron Arp <ronarp at>
> *
> Hi,
> I have been told that if some host computers find a narrow SCSI device on
> a wide SCSI bus, the computers will only talk narrow SCSI to all devices on
> the bus including any wide bus compatible devices. 

The SCSI spec allows to negotiate the width and the speed seperately 
for each device. It's the implementer's choice. 

> Does anyone know if
> this is true and if it is true, for which computers and which interfaces
> is it true?
> Ronald Arp
> Hewlett Packard Co
> ronarp at

Vit Novak
Sun Microsystems

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