Date: Wed, 28 Aug 1996 20:02:04 +0200 (MET DST) From: Philippe Regnauld <regnauld@tetard.glou.eu.org> To: smp@csn.net (Steve Passe) Cc: hackers@freebsd.org (hackers) Subject: Re: hackers-digest V1 #1415 Message-ID: <199608281802.UAA03038@tetard.glou.eu.org> In-Reply-To: <199608280822.CAA02664@clem.systemsix.com> from Steve Passe at "Aug 28, 96 02:22:42 am"
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Steve Passe écrit / writes: > >Because one day you or someone else will plug another case on the end > >of your chain, terminate it, and then spend hours or days trying to work > >out what's wrong with your I*^(*&^(8&^ SCSI subsystem. [...] > Actually I have done this, but it didn't hurt anything, ie terminators > at several points, as well as running without terminators at one end. > On other occasions I have done it and immediately had problems. There > is a wide variation of tolerance among equipment. I have also seen Yes, but that is not the point. The point was that you might not be the only one maintaining the system, and in that case (unless you're a perfect BOFH), you don't randomly plug terminators on the chain :-) Provided you wait long enough, it happens that even you forget you put them there, and while it's "trivial" to see if the terminator is in or not, you *still* have to undo the screws/open the case and look (pure hell if you have a 15 unit controller). Hell, that's like saying, "my machines work fine without proper grounding, I've never had any problems". Hope you have filtered power supplies :-) > setups where it was impossible to run with internal ribbon cable > and external round cables, had to go to ribbon on both ends. An impedance > mismatch, I guess. Had that too... And other weirdnesses with Sun systems. -- Phil -- -[ Philippe Regnauld / regnauld@eu.org / +55.4N +11.3E @ Sol3 / +45 31241690 ]- -[ "To kärve or nøt to kärve, that is the qvestion..." -- My sister ]-
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