From owner-freebsd-isp Tue Nov 5 13:28:36 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id NAA25989 for isp-outgoing; Tue, 5 Nov 1996 13:28:36 -0800 (PST) Received: from soda.CSUA.Berkeley.EDU (soda.CSUA.Berkeley.EDU [128.32.43.52]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id NAA25981 for ; Tue, 5 Nov 1996 13:28:31 -0800 (PST) Received: from localhost (richardc@localhost) by soda.CSUA.Berkeley.EDU (8.6.12/8.6.12) with SMTP id NAA27246; Tue, 5 Nov 1996 13:27:08 -0800 Date: Tue, 5 Nov 1996 13:27:07 -0800 (PST) From: Veggy Vinny To: Joe Greco cc: "Michael L. VanLoon -- HeadCandy.com" , isp@FreeBSD.org, Chad Shackley , JbHunt , "[Mario1-]" Subject: Re: /usr/obj size In-Reply-To: <199611051740.LAA06990@brasil.moneng.mei.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk 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