Date: Tue, 5 Nov 1996 13:27:07 -0800 (PST) From: Veggy Vinny <richardc@CSUA.Berkeley.EDU> To: Joe Greco <jgreco@brasil.moneng.mei.com> Cc: "Michael L. VanLoon -- HeadCandy.com" <michaelv@MindBender.serv.net>, isp@FreeBSD.org, Chad Shackley <chad@gaianet.net>, JbHunt <johnnyu@accessus.net>, "[Mario1-]" <mario1@PrimeNet.Com> Subject: Re: /usr/obj size Message-ID: <Pine.PTX.3.95.961105132323.13095Q-100000@soda.CSUA.Berkeley.EDU> In-Reply-To: <199611051740.LAA06990@brasil.moneng.mei.com>
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On Tue, 5 Nov 1996, Joe Greco wrote: > > The reason I keep saying 2GB is because that seems to be the current > > "sweet spot" where the price per gigabyte is lowest, and the > > performanc is at least "good". > > For price, 2GB is your ticket. For performance, 1GB is (I have recently > paid the "premium" to get a dozen and a half ST-31055N's... ouch... it > hurts, but you get almost double the throughput for having spent about > 30% more than the 2GB drives would have cost). Hmmm, speaking about 2 GIG drives, the new Barracuda's are cheaper than the ST32550N, I wonder if any performance is sacraficed since it has half the cache but come in both UltraSCSI and UltraSCSI Wide versions. Never thought about it but 5 2 GIG drives are cheaper than a single 9 gig drive, I always thought the bigger the drive, the less the cost per megabyte. > > Of course 7200RPM drives are faster. But, if you can buy an extra > > drive or two, and put that in the stripe set, with the money you save > > by going 5400RPM, that extra drive might just make up the difference > > in speed. So, to say it the other way around: no, you don't need > > 7200RPM drives. > > Yes. I will put a two-disk stripe of a pair of ST-31055N Hawk-2 drives > (9ms, 5400RPM, etc) up against a single ST-32550N Barracuda (8ms, 7200RPM) > any day and beat it by a fair margin. And relatively speaking, with the > 32550N's hovering around $650 and 31055N's around $320, tell me what > makes more sense to do :-) > > But I will grant that the 32155N's, in the low 5's are attractive too. Hmmm, I know I just asked this. but how does striping work and is it only for SCSI drives? Vince GaiaNet Corporation - Unix Networking Operations - GUS Mailing Lists Admin
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