From owner-freebsd-scsi Tue Apr 16 11:49:57 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from panzer.kdm.org (panzer.kdm.org [216.160.178.169]) by hub.freebsd.org (Postfix) with ESMTP id 04A8037B405 for ; Tue, 16 Apr 2002 11:49:54 -0700 (PDT) Received: (from ken@localhost) by panzer.kdm.org (8.11.6/8.9.1) id g3GInpf78570; Tue, 16 Apr 2002 12:49:51 -0600 (MDT) (envelope-from ken) Date: Tue, 16 Apr 2002 12:49:51 -0600 From: "Kenneth D. Merry" To: "M. Warner Losh" Cc: scsi@FreeBSD.ORG Subject: Re: How to get 160MB/s LVD drives to use 160MB/s Message-ID: <20020416124951.A78541@panzer.kdm.org> References: <20020416.000750.89789192.imp@village.org> <20020416100426.A77224@panzer.kdm.org> <20020416101205.A77341@panzer.kdm.org> <20020416.120516.98708693.imp@village.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020416.120516.98708693.imp@village.org>; from imp@village.org on Tue, Apr 16, 2002 at 12:05:16PM -0600 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Tue, Apr 16, 2002 at 12:05:16 -0600, M. Warner Losh wrote: > In message: <20020416101205.A77341@panzer.kdm.org> > "Kenneth D. Merry" writes: > : > There are several possibilities. > : > > : > - your cabling or termination isn't right for Ultra160. (You need a > : > "twisty flat" cable with a terminator block on the end.) > : > - you jumpered the drives for single ended mode > : > - the SCA->HD68 adapters don't do LVD > : > > : > I would guess that the last one is probably the problem, since the first > : > two are more obvious. > : > : One other note -- the jumpers on the adapter are probably used for setting > : the SCSI ID, delayed start, led output, etc. (There may be an LVD jumper, > : but it wouldn't make as much sense -- why should the adapter care?) > > The SCA adapter box said that it was rated for LVD. The cabling is > right for Ultra 160 (the "crinkle" twisted pairs), but the terminator > says "SCSI LVD SE TERMINATOR" on it and it was pointed out on IRC that > this was suspect. I'm taking one of the drive to work today to see if > I can play with it there on my 160 system there.... I don't know about that, it probably just means the terminator can work in LVD or SE mode. If you've got a machine with SCA drive bays (that can do Ultra160) you might try plugging it into that to eliminate the converter as the source of the problem. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message