Date: Sat, 25 May 1996 20:51:29 +0000 From: "Richard Lyon" <rlyon@oznet02.ozemail.com.au> To: freebsd-hardware@freebsd.org, freebsd-isp@freebsd.org, Chris Linstruth <cjl@qnet.com> Subject: Re: FreeBSD: SCSI hangs, panics and other failures as nntp serv Message-ID: <199605251101.VAA20328@oznet02.ozemail.com.au>
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> We at qnet have been attempting to use FreeBSD as a > Usenet News server for about a year. We are at this time > evaluating other alternatives because we have been unable to > achieve the stability required under this kind of load. > > Would another host adapter (Buslogic?) solve all our problems? > I have used an Adaptec 1542B SCSI adapter for many years starting with pre version 2.0 FreeBSD releases. I have a couple of hard drives and a CDROM hanging off it (All internal). The system is rock solid and never has any poblems. It sounds like there may be some sort of hardware setup problem. I assume you checked for the obvious things like interrupt clashes, port overlaps, DMA channel setup, synchronous negotiation, parity checking, scsi terminators, etc ... ??? Also I assume you have tried more than more than 1542 card to check that it is not just a faulty board. I seem to remember the only real problem we experienced was selecting the correct wait states in the bios setup. Initially the machine experienced random crashes until we got this right. A good simple check is to see if something like DOS runs OK on the SCSI hard disk over a few hours. Also the 1542 manual has some good tips and should be read very carefully. FreeBSD works perfectly well with the Adaptec 1542B card!! I am currently running FSB 2.1R on a 33MHz 486 with a 1542B. I have not customised the kernel in any way. Regards ...
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