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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!lucy.swin.edu.au!news.rmit.EDU.AU!goanna.cs.rmit.edu.au!news.apana.org.au!cantor.edge.net.au!news.teragen.com.au!news.access.net.au!news.mel.connect.com.au!news.mel.aone.net.au!grumpy.fl.net.au!news.webspan.net!www.nntp.primenet.com!nntp.primenet.com!news.sprintlink.net!news-peer.sprintlink.net!news-pull.sprintlink.net!news.sprintlink.net!news-dc-10.sprintlink.net!news.rain.net!news.proaxis.com!news From: Chet Douglas <cdouglas@proaxis.com> Newsgroups: comp.periphs.scsi,comp.unix.bsd.freebsd.misc Subject: Re: Bizarre SCSI problem (3 disks work, 4 don't) (2940UW/Quantum Atlas II) Date: Thu, 06 Feb 1997 10:16:36 -0800 Organization: CRD Consulting Lines: 16 Message-ID: <32FA2004.53F@proaxis.com> References: <5d7201$qa@gosset.maths.tcd.ie> NNTP-Posting-Host: pr00-41.proaxis.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.01 (Win95; I) Xref: euryale.cc.adfa.oz.au comp.periphs.scsi:69789 comp.unix.bsd.freebsd.misc:35074 Do all of the drives have synchronous transfer negotiation enabled (check the BIOS). I have seen problems with some SCSI drives that wouldn't play together because of FW problems having to do with sychronous transfers. You could disable it for all of the drives and see if it makes any difference. Unfortunately it will kill your performance too but you could try it out.... Chet -- Chet Douglas CRD Consulting Peripheral FW,SW,and Drivers cdouglas@proaxis.com (541) 754 - 1817