Date: Thu, 12 Aug 1999 18:34:41 -0400 (EDT) From: Matt Simerson <matt@michweb.net> To: up@3.am Cc: freebsd-scsi@freebsd.org Subject: Re: Adaptec AIC-7896 flakyness Message-ID: <Pine.BSI.3.96.990812183009.1868D-100000@ns2.michweb.net> In-Reply-To: <Pine.GSO.3.96.990812180232.3256A-100000@richard2.pil.net>
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James, This sounds a lot like a SCSI termination issue to me. Are you sure you're in compliance with all the laws of SCSI that THOU SHALT FOLLOW in order to make it work right? For instance, you must always have the first and last devices in a SCSI chain terminated. What type of termination do you have set up on the Adaptec card? From your sketchy diagram, I'll guess you've got no termination set up on the card and are use the drive at SCSI ID 2 as the first device. This will be problematic. Matt "I have books written only about SCSI" Simerson On Thu, 12 Aug 1999 up@3.am wrote: > I'm trying to get 3 IBM 9.1GB LVD SCSI drives to work with a new install > using an Adaptec AIC-7896 (imbedded on an Intel L440GX+ motherboard). The > ONLY way I got all 3 drives working was the following: > > SCSI ID 0 -> P7 (furthest from the controller) connector > " " 1 -> P6 (next connector in) > " " 2 (terminator jumper in) -> P5 (and so on...) > > with P1 going to the controller (motherboard in this case) > > The only problem with that is that I need to move the last drive (SCSI ID > 2) to a drive bay that the P5 connector can't reach. I've tried every > other connector on the SCSI ribbon cable with no luck; I either get > panics as soon as the install tries to start, or everything hangs before I > even get that far. > > Is this normal behavior? Is there a fix? Perhaps a jumper setting on the > drives (the "disable parity" jumper is off by default, for example)? > > Thanks in advance, > > James Smallacombe PlantageNet, Inc. CEO and Janitor > up@3.am http://3.am > ========================================================================= > ISPF 3 - The Forum for ISPs by ISPs(tm) || Nov 15-17, 1999, New Orleans > 3 days of clues, news, and views from the industry's best and brightest. > Visit <http://www.ispf.com/>; for information and registration. > ========================================================================= > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-scsi" in the body of the message > > `````````````````````````````````````````````````````````````````` Matt Simerson http://users.michweb.net/~matt MichWeb Inc. - President http://www.michweb.net The Art Farm - Technical Wizard http://www.theartfarm.com Better to dare Mighty Things and fail, than to live in __o a gray twilight where there is neither victory or _-\<,_ defeat. -- attributed to Theodore Roosevelt ......(_)/ (_) `````````````````````````````````````````````````````````````````` To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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