From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263424AbTDCVbd (for ); Thu, 3 Apr 2003 16:31:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263421AbTDCVbc (for ); Thu, 3 Apr 2003 16:31:32 -0500 Received: from amsfep15-int.chello.nl ([213.46.243.28]:41749 "EHLO amsfep15-int.chello.nl") by vger.kernel.org with ESMTP id S263424AbTDCVbU (for ); Thu, 3 Apr 2003 16:31:20 -0500 Message-ID: <009c01c2fa29$f7b2d290$2e77c23e@pentium4> From: "Jonathan Vardy" To: "Peter L. Ashford" , "Jonathan Vardy" Cc: , References: Subject: Re: RAID 5 performance problems Date: Thu, 3 Apr 2003 23:42:47 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > The ONLY reason that I can think of to use round cables would be for > looks. From a performance or reliability standpoint, they are a waste of > money. I routinely build systems with dual 8-channel IDE RAID cards > (3Ware 7500-8) and 16 disks, and ONLY use flat cables. I use rounded cables in my case for a few reasons: - The distance between my promise and my drives is small yet the promise cables are long, the rounded cables I have are 12" long and fit very neatly - The promise cables had two IDE connectors but I only wanted to put one drive per channel; the rounded cables are single cables - Air flow; because of my small casing the flat promise cables were contricting the airflow quite a bit, the rounded less - flexibility; I found the flat cables hard to bend in to place whereas the round cables you could twist easily I've added a link which should make it clear that rounded cables in my case are a benefit to me. What I was worried about was that they could be inferior quality and thus be a factor in my raid performance. http://www.datzegik.com/DSC00056.JPG