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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.cis.okstate.edu!news.ksu.ksu.edu!news.physics.uiowa.edu!math.ohio-state.edu!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!news.new-york.net!ritz.mordor.com!ritz From: ritz@ritz.mordor.com (Chris Mauritz) Subject: Re: nfs speed question X-Newsreader: TIN [UNIX 1.3 950824BETA PL0] Lines: 58 Organization: Mordor International Message-ID: <DKvM5n.Kt6@ritz.mordor.com> References: <2019011754@f401.n711.z3.ftn> <4cj7lq$gip@atusks02.aut.alcatel.at> <4cp86h$a94@blob.best.net> <4crg9b$nd8@atusks02.aut.alcatel.at> Date: Mon, 8 Jan 1996 19:00:58 GMT Marino Ladavac (ladavac@aut.alcatel.at) wrote: : Matt Dillon (dillon@best.com) wrote: : : :In article <4cj7lq$gip@atusks02.aut.alcatel.at>, : : :Marino Ladavac <ladavac@aut.alcatel.at> wrote: : : :>Trev Roydhouse (Trev.Roydhouse@f401.n711.z3.fidonet.org) wrote: : : :> : : :>: > Don't use Quantum fireball harddisks... : : :> : : :>: Why not? : : :> : : :>According to c't magazine test, they have an abysmal SCSI implementation. : : :>SCSI subsystem is not capable to transfer data on platter speed from the : : :>outside half of the disk. EIDE version of the same disk has no such : : :>problems, and is 20% cheaper (c't's words: for 20% more you get 30% less.) : : :> : : :>/Alby : : : We've had good luck with 2 and 4 GB Seacrate Barracuda's ... as long : : as you keep them cool. On the otherhand, we've lost two quantums in : : the last 6 months, the most recent a 2GB Quantum Empire which had a : : nasty head crash (two dozen unrecoverable hard errors and about 40 : : recoverable soft errors). : : : The barracuda's fly along quite nicely with a PCI SCSI controller... : : I see 5 to 6 MBytes/sec through the filesystem reading and writing, : : and they appear to be quite reliable. : : : -Matt : : Yes, but how *do* you keep them cool? (Hint: you put them in an external : SCSI case, at most two of them per case for four, and then ventilate the : be-Jesus out of them--children, don't do this to your minitowers.) : : Up to now, I've had no problems with Seagate Hawks which are more alike : the originally mentioned Fireballs (both are 5400 rpm designs.) Get up to : 40-ish centigrade and stay there, even in a run-off-the-mill midtower : without any exceptional cooling, and all ISA/VLB slots occupied. As far as I've been able to determine, none of my cuda's failed for heat-related reasons. I've had 2 low profile 32500N's fail in the last couple of months. A friend of mine has probably a hundred or so of these in service and I don't think he's had a heat-induced failure either. What we HAVE had problems with is sub-optimal voltage regulation from the external enclosure power supplies. My friend seems to think that during seeks close to the spindle (combined with a sudden drop in voltage) the heads can (and do) slam into the spindle and crash the drive. For what it's worth, the cases were manufactured by CI Designs. I'm probably going to start buying the Conner 7200rpm drives for cost reasons. I've heard reasonably good things about them and they are usually $250-350 cheaper than Barracudas of similar capacity. Regards, Chris -- Christopher Mauritz | For info on internet access: ritz@mordor.com | finger/mail info@ritz.mordor.com OR Mordor International | http://www.mordor.com/ 201/212/718 internet access | Modem: (201)433-7343,(212)843-3451