Date: Sun, 5 Dec 1999 14:42:55 -0800 (PST) From: Matthew Jacob <mjacob@feral.com> To: Wilko Bulte <wilko@yedi.iaf.nl> Cc: Kelly Yancey <kbyanc@posi.net>, jkh@zippy.cdrom.com, dseg@texar.com, billf@chc-chimes.com, rfg@monkeys.com, freebsd-hackers@FreeBSD.ORG Subject: Re: Strange SCSI sickness Message-ID: <Pine.BSF.4.10.9912051441160.28920-100000@beppo.feral.com> In-Reply-To: <199912052150.WAA74217@yedi.iaf.nl>
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> Another interesting cause for problems is duff powersupplies. As the > proverb goes "every machine is as good as it's PSU". E.g. I just struggeled > with a DLT tape unit that inexplicable reset itself. After examining the > 5Volts rail with a scope I found glitches on it whenever the drive did a > bit of rewinding (dropping out of streaming mode). Had me stumped for a > while. > That's pretty rare these days. It used to happen all the time when switching power supplies first appeared (motorboating is what we called it), but even recently I had a marginal supply that supplied 4.4VDC- *just* enough to function *most* of the time. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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