From owner-freebsd-scsi Tue Feb 12 6:15:12 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from ct980320-b.blmngtn1.in.home.com (ct980320-b.blmngtn1.in.home.com [65.8.207.32]) by hub.freebsd.org (Postfix) with ESMTP id 1E2A337B41A for ; Tue, 12 Feb 2002 06:15:05 -0800 (PST) Received: (from mikes@localhost) by ct980320-b.blmngtn1.in.home.com (8.11.6/8.11.4) id g1CECYT40262; Tue, 12 Feb 2002 09:12:34 -0500 (EST) (envelope-from mikes) From: Mike Squires Message-Id: <200202121412.g1CECYT40262@ct980320-b.blmngtn1.in.home.com> Subject: Re: SCSI parity error detected In-Reply-To: <20020211170640.C245@ision.net> "from Frank Altpeter at Feb 11, 2002 05:06:40 pm" To: Frank Altpeter Date: Tue, 12 Feb 2002 09:12:34 -0500 (EST) Cc: FreeBSD SCSI X-Mailer: ELM [version 2.4ME+ PL88 (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII 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 Frank Altpeter > > Since i used to have an adaptec 1542cf before, i'm quite sure that the > disks and the SCA adapters are ok, because the system was running fine This really sounds like hardware to me. I have seen comments that the SCA adaptors are problematic, especially if the bus is set to high speed; the 154X series defaulted to something like 5MB/sec unless you changed BIOS defaults, since most motherboards had lousy DMA implementations. Sometimes the solutions don't make any sense; I used at one time the Archive 458xNP DAT autoloaders with FreeBSD and Win NT and I never could get them to work properly with their internal terminators, but they worked perfectly when terminated with an old NEC SCSI CD-ROM (controllers were always Adaptec 2940UW's). If this system were mine I would replace the SCSI controller with one of the Symbios/LSI/NCR PCI controllers with both 68 and 50 pin connectors; in the U.S. they run about $30. I would also replace both SCA adaptors with 68-pin variants. Again, in the US, I've seen these for about $20. I'm currently running 4.5-STABLE with 4 ST410800WD's (Sun surplus) off a DPT SmartRAID IV controller and an NEC CD-ROM and ADIC VLS DLT tape changer off an Adaptec 2940UW; motherboard is SM P6DLH. System has been running under various 4.x versions for more than a year, absolutely rock solid. MLS To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message