From owner-freebsd-scsi Thu Aug 12 15:45:52 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from atlrel2.hp.com (atlrel2.hp.com [156.153.255.202]) by hub.freebsd.org (Postfix) with ESMTP id 94C2215055 for ; Thu, 12 Aug 1999 15:45:45 -0700 (PDT) (envelope-from darrylo@sr.hp.com) Received: from postal.sr.hp.com (root@postal.sr.hp.com [15.4.46.173]) by atlrel2.hp.com (8.8.6 (PHNE_17135)/8.8.5tis) with ESMTP id SAA15458; Thu, 12 Aug 1999 18:45:14 -0400 (EDT) Received: from mina.sr.hp.com (root@mina.sr.hp.com [15.4.42.247]) by postal.sr.hp.com with ESMTP (8.8.6 (PHNE_17190)/8.7.3 TIS 5.0) id PAA26854; Thu, 12 Aug 1999 15:44:55 -0700 (PDT) Received: from localhost (darrylo@mina.sr.hp.com [15.4.42.247]) by mina.sr.hp.com with ESMTP (8.8.6 (PHNE_17135)/8.7.3 TIS 5.0) id PAA23186; Thu, 12 Aug 1999 15:45:37 -0700 (PDT) Message-Id: <199908122245.PAA23186@mina.sr.hp.com> To: Matt Simerson Cc: up@3.am, freebsd-scsi@FreeBSD.ORG Subject: Re: Adaptec AIC-7896 flakyness Reply-To: Darryl Okahata In-reply-to: Your message of "Thu, 12 Aug 1999 18:34:41 EDT." Mime-Version: 1.0 (generated by tm-edit 7.108) Content-Type: text/plain; charset=US-ASCII Date: Thu, 12 Aug 1999 15:45:37 -0700 From: Darryl Okahata Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Matt Simerson 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. 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. ] -- Darryl Okahata darrylo@sr.hp.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion, or policy of Hewlett-Packard, or of the little green men that have been following him all day. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message