Date: Tue, 31 Dec 2002 22:08:22 -0500 From: Bruce Campbell <bruce@engmail.uwaterloo.ca> To: Mike Tancsa <mike@sentex.net> Cc: freebsd-hardware@freebsd.org Subject: Re: ata "fallback to PIO mode" on dual processor AMD systems Message-ID: <1041390502.3e125ba66487e@www.nexusmail.uwaterloo.ca> In-Reply-To: <ld741vom9tos4j7cnc6sa1luh8a6tfpc9t@4ax.com> References: <1041368236.3e1204ac45da5@www.nexusmail.uwaterloo.ca> <025701c2b112$ddfbf580$1200a8c0@gsicomp.on.ca> <sUQM7C.A.Q0J.aFhE-@coal.sentex.ca> <ld741vom9tos4j7cnc6sa1luh8a6tfpc9t@4ax.com>
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Curiously, the 4 Intel systems that are working without problems are UDMA33: atapci0: <SiS 5591 ATA33 controller> port 0xb800-0xb80f at device 2.5 on pci0 while the problematic AMD systems are UDMA100: atapci0: <AMD 768 ATA100 controller> port 0xb800-0xb80f at device 7.1 on pci0 The removeable drive bays use a short piece of 80 conductor cable to go from a large centronics type connector to the drive. Maybe it is a stub matching problem. The boxes that these enclosures came in had a sticker which said "UDMA33/66/100" but under the sticker it just said "UDMA33/66". Maybe I was ripped off. Quoting Mike Tancsa <mike@sentex.net>: > On Tue, 31 Dec 2002 16:49:57 -0500, in sentex.lists.freebsd.hardware you > wrote: > > > > All drives are installed in removeable drive bays. I don't have the > make/model > > on hand right now. They were $19 CAD. ($13USD). The low cost makes > > me suspicious now, but... > > > > possibly. If they are made by Startech, you will get the occasional bad > one that will show similar behaviour. We make heavy use of 3ware cards on > our FreeBSD servers and they are much more sensitive to bad trays in our > experience. We go through quite a few as we use pullouts on all our boxes > at the office and for customer servers we build. If possible, run the > problem drive directly on the cable, or move the drives around to see if > your problems follow the drives or the trays. > > ---Mike > Mike Tancsa (mike@sentex.net) > http://www.sentex.net/mike > -- Bruce Campbell Engineering Computing CPH-2374B University of Waterloo (519)888-4567 ext 5889 ---------------------------------------- This mail sent through www.mywaterloo.ca To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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