Narrow devices on a wide bus
Brian A Berg
bberg at bswd.com
Wed Apr 10 17:11:51 PDT 1996
* From the SCSI Reflector, posted by:
* Brian A Berg <bberg at bswd.com>
Re: a mix or narrow and wide devices on a wide SCSI bus, I have successfully
used a wide device in wide mode and a narrow device in narrow mode on
Silicon Graphics computers. Any implementation of SCSI on a host that does
not allow this is presumably a bug in the host computer's driver.
Ron Arp (and anyone else): in which environment did you see only narrow
use of a wide device when the wide bus also had a narrow device(s) on it?
Of course, any narrow device on such a bus must be further away from the
host on the daisy chain than any wide device(s), as the bus goes from 16
to 8 bits upon reaching the first narrow device. Could such a cabling
error have caused your problem?
Brian A. Berg E-mail: bberg at bswd.com
Berg Software Design Voice: 408.741.5010
P.O. Box 3488 FAX: 408.741.5234
Saratoga, CA 95070 USA Focus: software consulting: SCSI, optical storage
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