Date: Tue, 12 Feb 2002 09:12:34 -0500 (EST) From: Mike Squires <mikes@ct980320-b.blmngtn1.in.home.com> To: Frank Altpeter <frank@altpeter.de> Cc: FreeBSD SCSI <freebsd-scsi@freebsd.org> Subject: Re: SCSI parity error detected Message-ID: <200202121412.g1CECYT40262@ct980320-b.blmngtn1.in.home.com> In-Reply-To: <20020211170640.C245@ision.net> "from Frank Altpeter at Feb 11, 2002 05:06:40 pm"
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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
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