Date: Thu, 12 Aug 1999 19:17:25 -0400 (EDT) From: <up@3.am> To: Darryl Okahata <darrylo@sr.hp.com> Cc: Matt Simerson <matt@michweb.net>, freebsd-scsi@FreeBSD.ORG Subject: Re: Adaptec AIC-7896 flakyness Message-ID: <Pine.GSO.3.96.990812191106.11009A-100000@richard2.pil.net> In-Reply-To: <199908122245.PAA23186@mina.sr.hp.com>
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On Thu, 12 Aug 1999, Darryl Okahata wrote: > Matt Simerson <matt@michweb.net> wrote: > > > 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. Hi Matt: No, I have the card's termination on....it protested loudly when I turned it off (SCSI BIOS wouldn't come up). > Also, LVD drives have no provision for on-drive termination (at > least, none that I've heard of, and I know that the IBM 9ES 9.1GB > drives, don't -- I've got a couple). You've got to explicitly add a > terminator to the end of the LVD cable. > > [ In the case of the IBM 9ES drive, the wide SE version has a > "termination" jumper. In the LVD version, the jumper that was used > for termination, on the wide SE version, is used to switch between > wide SE and LVD modes. For more details, see the IBM support docs at > their web site. ] Hmmm...this is odd indeed...I'm looking at the drive and on the right-hand set of jumpers, jumper "G" is marked "TERM. POWER ON". I assumed this provided termination for the end of the chain if used. Flipping the drive over, we have model: DNES-309170 E182115HG further down on the label, it says: SCSI LVD/SE I'll check out IBM's site. Thanks to everyone who responded! 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
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