Date: Sun, 13 Aug 1995 09:13:12 -0700 From: Pete Carah <pete@puffin.pelican.com> To: hardware@freebsd.org Subject: Re: Upgrade to my machine Message-ID: <199508131613.JAA01053@puffin.pelican.com> In-Reply-To: <199508130850.BAA09255@gndrsh.aac.dev.com>
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In article <199508130850.BAA09255@gndrsh.aac.dev.com> Rod writes: ..... >> I have a Hawk and a Barracuda and recommend them both with the following >> proviso: The Barracuda runs very hot. I have it mounted in a server case >> containing 3 fans (5 if you count the power supply and CPU.) One of the >> fans blows directly across it. Still warm to the touch but not worth getting >> paranoid over. Performance wise it rocks. >And that ``proviso'' is one many are not willing to live with. If a drive >requires that type of external cooling air blown at it, then something is >seriously wrong. Well, the official word from SGI is to not mount Barracuda drives internal to any SGI except the large Challenge/Onyx rack for this reason. (old indigo, indy, all older machines; actually they may have improved cooling on indigo2 but I don't remember...) There are a couple of other drive lines in that list but I don't remember which either. >The Barracuda series of drives have had a very hight field FIT (failure in >time) rate due to this problem. The hawk drives on the other hand do not >run near as hot, have not had high FIT rates in the field and seem to be >doing just fine performance wise. 7200 RPM costs you, in various ways. I don't want the 2gb Barracuda in the same room with me, either (holds hands to ears :-)... (though my manager did put one on my desk for a while) >Read my .signature, and then think about what I said, and you may fully >understand why I said it :-) :-) Barracuda drives seem just fine in the "appropriate" external case... We've run a bunch (~20) of them (2gb model) for >1.5 yrs in whatever case Western Scientific furnishes, and a few in cases from Legacy (?) (I think they are the same...), without *any* drive failures (well, there was one in a week; I somehow doubt that was from this cause). We have seen the usual problem with non-ideal scsi cables; the SGI indy's are especially susceptible to this (along with the older 1542C's that Rod has already commented on, and whatever else). (actually all SGI's are susceptible to this; there seems to be something about the WD scsi chipset that they use...) -- Pete
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