Date: Tue, 16 Apr 2002 12:49:51 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: "M. Warner Losh" <imp@village.org> Cc: scsi@FreeBSD.ORG Subject: Re: How to get 160MB/s LVD drives to use 160MB/s Message-ID: <20020416124951.A78541@panzer.kdm.org> In-Reply-To: <20020416.120516.98708693.imp@village.org>; from imp@village.org on Tue, Apr 16, 2002 at 12:05:16PM -0600 References: <20020416.000750.89789192.imp@village.org> <20020416100426.A77224@panzer.kdm.org> <20020416101205.A77341@panzer.kdm.org> <20020416.120516.98708693.imp@village.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Apr 16, 2002 at 12:05:16 -0600, M. Warner Losh wrote: > In message: <20020416101205.A77341@panzer.kdm.org> > "Kenneth D. Merry" <ken@kdm.org> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020416124951.A78541>