From owner-freebsd-hardware@FreeBSD.ORG Thu Dec 15 20:03:59 2005 Return-Path: X-Original-To: freebsd-hardware@freebsd.org Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ED90B16A41F for ; Thu, 15 Dec 2005 20:03:59 +0000 (GMT) (envelope-from bob@immure.com) Received: from pimout4-ext.prodigy.net (pimout4-ext.prodigy.net [207.115.63.98]) by mx1.FreeBSD.org (Postfix) with ESMTP id EE2E043D62 for ; Thu, 15 Dec 2005 20:03:58 +0000 (GMT) (envelope-from bob@immure.com) X-ORBL: [66.136.206.1] Received: from maul.immure.com (adsl-66-136-206-1.dsl.austtx.swbell.net [66.136.206.1]) by pimout4-ext.prodigy.net (8.13.4 outbound domainkey aix/8.13.4) with ESMTP id jBFJvpoo143470; Thu, 15 Dec 2005 14:57:56 -0500 Received: from rancor.immure.com (rancor.immure.com [10.1.132.9]) by maul.immure.com (8.13.4/8.13.4) with ESMTP id jBFJvkWC006936; Thu, 15 Dec 2005 13:57:46 -0600 (CST) (envelope-from bob@immure.com) Received: from rancor.immure.com (localhost.immure.com [127.0.0.1]) by rancor.immure.com (8.13.4/8.13.4) with ESMTP id jBFJvkGr040161; Thu, 15 Dec 2005 13:57:46 -0600 (CST) (envelope-from bob@rancor.immure.com) Received: (from bob@localhost) by rancor.immure.com (8.13.4/8.13.1/Submit) id jBFJvkPO040160; Thu, 15 Dec 2005 13:57:46 -0600 (CST) (envelope-from bob) Date: Thu, 15 Dec 2005 13:57:46 -0600 From: Bob Willcox To: Alexandre DELAY Message-ID: <20051215195746.GA39959@rancor.immure.com> References: <43A13E1B.9060106@gatorhole.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 X-immure-MailScanner-Information: Please contact the ISP for more information X-immure-MailScanner: Found to be clean X-MailScanner-From: bob@immure.com Cc: Ragnar Lonn , freebsd-hardware@freebsd.org Subject: Re: HDD X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Bob Willcox List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Dec 2005 20:04:00 -0000 On Thu, Dec 15, 2005 at 06:47:49PM +0100, Alexandre DELAY wrote: > The only prices I found about this kind of product is at: > http://www.psism.com/flashdrive.htm > > It is still expensive, but when I see the price of last year's usb flash > disks compared to todays, the ratio is 1/2. I bet this will follow usb > drives prices. Well, there's the rub. It will take a lot of price halvings for flash drives to even get close. If you take ZipZoomFly as a typical online retailer, they are selling 400GB IDE drives for $251 and 4GB flash drives for $236. That works out to $0.63/GB for the hard disk and $59/GB for the flash drive. This represents a ratio of almost 94:1. I think it will be a long time before flash drives can make up that price differential, and during that time hard drive capacities will likely continue to increase and their cost per GB continue to fall. It's been this way for the 30 years that I've been watching it, and I don't see any likely reason for that to change anytime soon. Of course, there are applications where flash memory drives have distinct advantages (e.g. portable devices), but for mainstream data storage, I don't see any real threat to hard drive technology in the foreseeable future. Bob > > I'm happy to see that some people are interrested by this topic. > > cheers > > > -----Message d'origine----- > > De : owner-freebsd-hardware@freebsd.org > > [mailto:owner-freebsd-hardware@freebsd.org]De la part de Ragnar Lonn > > Envoy? : jeudi 15 d?cembre 2005 10:58 > > ? : Bob Willcox > > Cc : Alexandre DELAY; freebsd-hardware@freebsd.org > > Objet : Re: HDD > > > > > > Bob Willcox wrote: > > > > >On Wed, Dec 14, 2005 at 05:45:53PM +0100, Alexandre DELAY wrote: > > > > > > > > >>Don't you think that flash drives are also a good solution? > > >> > > >>I am sure that it will be the future replacement for hard drive disks. > > >>see http://www.memtech.com/ for example > > >> > > >>With no buffer and 1ms access delay you minimise write > > failures. It is an > > >>interresting solution. > > >> > > >> > > > > > >Hmm, I see no prices listed on the Memtech web site (did I simply > > >miss them?). So, what does a 96GB flash drive cost in comparison to a > > >magnetic disk hard drive of similar capacity? > > > > > >Stories of the impending demise of magnetic disk drives have been > > >circulating since at least the late '70s (back then I seem to remember > > >that bubble and/or CCD memory was to spell their doom). So far, it > > >appears that nothing has come along that has been able to compete on a > > >cost per byte basis. Flash memory might be the technology to do it, but > > >somehow I doubt it. > > > > > > > > > > I like to build silent PCs on my spare time and avoiding any moving > > parts is of course > > a good way to achieve this goal. This makes me very interested in any > > memory-based > > hard disk replacements but so far, they seem to be hideously expensive. > > You have to > > pay over $1000 for 8 GB of storage. Multiply that with 10 or so and > > you're likely > > to have the cost of that 96GB flash drive. > > > > I too thought that memory disks would take over some five years ago or > > so, but > > conventional hard disk technology has managed to stay ahead all the > > time, providing > > lots more storage per dollar and often also throughput rates almost > > matching that > > of the solid state memories. I think we will see a shift sometime, but > > I've stopped > > trying to predict it. Hard disk technology has such a big lead that it > > may take a > > while yet, I think. > > > > /Ragnar > > > > > > > > > > > > > > > > _______________________________________________ > > freebsd-hardware@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > > To unsubscribe, send any mail to > > "freebsd-hardware-unsubscribe@freebsd.org" > > -- Bob Willcox Men freely believe that what they wish to desire. bob@immure.com -- Julius Caesar Austin, TX