From owner-freebsd-hackers@FreeBSD.ORG Thu Jul 31 17:33:32 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6451637B401 for ; Thu, 31 Jul 2003 17:33:32 -0700 (PDT) Received: from h24-66-230-151.ed.shawcable.net (h24-66-230-151.ed.shawcable.net [24.66.230.151]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2601B43FBF for ; Thu, 31 Jul 2003 17:33:31 -0700 (PDT) (envelope-from soralx@cydem.org.ua) Received: from h24-66-229-2.ed.shawcable.net (h24-66-229-2.ed.shawcable.net [24.66.229.2]) by h24-66-230-151.ed.shawcable.net (Postfix) with ESMTP id F18703767A for ; Thu, 31 Jul 2003 18:33:30 -0600 (MDT) From: To: freebsd-hackers@freebsd.org Date: Thu, 31 Jul 2003 18:33:28 -0600 User-Agent: KMail/1.5 References: <200307311455.h6VEtx5i088476@spider.deepcore.dk> <20030731105545.B85113@alpha.yumyumyum.org> In-Reply-To: <20030731105545.B85113@alpha.yumyumyum.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307311833.28209.soralx@cydem.org.ua> Subject: Re: Ultra ATA card doesn't seem to provide Ultra speeds. X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Aug 2003 00:33:32 -0000 > > Maybe not, but they do give a transferspeed from medium range and that > > is what can be expected. > > Hmm, I guess not everyone does that. We have some seagates here at work we > were wondering about because they seemed too slow, and we couldn't find > anything aside from what we already knew... the tranfer speed of the > SCSI interface, which is basically from drive cache to controller. That is > unless the manufacturers hide the info somewhere so you really have to > dig, which wouldnt' surprise me. Example took me less than 64 seconds to find (for Seagate Barracuda IV): http://www.seagate.com/cda/products/discsales/personal/family/0,1085,559,00.html Look for 'Avg. Sustained Transfer Rate'. AFAIK, every manufacturer I know gives the sustained transfer rate specs (which are sometime a bit too high than in reality). If the specs are not specified, it'd be very suspicious, and I would think 128 time before buying such drives. 31.07.2003; 18:28:06 [SorAlx] http://cydem.org.ua/