[3741] in linux-scsi channel archive
SCSI cable parameters
daemon@ATHENA.MIT.EDU (Brendan Miller)
Wed Apr 22 13:43:37 1998
Date: Wed, 22 Apr 1998 10:24:05 -0700
From: Brendan Miller <brmiller@wco.com>
To: linux-scsi@vger.rutgers.edu
Reply-To: Brendan Miller <brmiller@wco.com>
Quick question. I know there are maximum recommended cable lengths
for SCSI depending on the speed of drives on the bus. Some things I've
read refer to purely MB/s--5, 10, 20, 40, etc.--and some try to refer
to the SCSI terminolgy--Fast, Wide, Fast-Wide, Ultra, Ultra-Wide, etc.
I apologize if this is in the FAQ, but can someone tell me what the
maximum recommended cable lengths are for different speeds? I guess
if you have to go by the speed of your fastest drive, i.e., if I have
an ultra-wide 40MB/s drive and a bunch of narrow 10MB/s, I'm constricted
to the restraints of ultra-wide cabling.
Also, two other related questions:
1) How close together on the bus (ribbon cable) can two drives be?
2) How close to the adapter can one drive be?
Brendan Miller
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