[6363] in linux-scsi channel archive
RE: adaptec 2940U2W/ibm ultrastar 9ES problem
daemon@ATHENA.MIT.EDU (Charles Galpin)
Wed Apr 21 09:13:08 1999
Date: Wed, 21 Apr 1999 08:47:39 -0400
From: Charles Galpin <cgalpin@lighthouse-software.com>
To: Chiaki Ishikawa <Chiaki.Ishikawa@personal-media.co.jp>,
linux-scsi <linux-scsi@vger.rutgers.edu>
>My guess is that there must be a cable (use quality cable and
>don't go over maximum spec length) and terminator (use active) problem of
>some sort.
I bought and tried another cable, with no improvement. At $32 a pop, I'm not
inclined to try another. I have an active terminator on the cable. I have
not idea if this can be tested independantly. Again, it works under NT,
which is supposedly very picky about such things.
>Or it could be that the disk in question can't go run faster as the
>poster suggested. Have you checked the spec of the disk at the
>vendor's site? That SCSI-II LVD can go as fast as the max speed of
>the standard doesn't necessarily mean that all the disks that are
>hooked up can go at that speed.
>However, if the SCSI card has a tough time
>negotiating the transfer speed initially, it certainly is a problem,
>but such problems are not unheard of.
Yup, this bad boy is claimed to be able to do 80mb/s (burst I guess)
http://www.storage.ibm.com/hardsoft/diskdrdl/ultra/9esdata.htm
charles
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