From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jonathan Vardy" Subject: Re: RAID 5 performance problems Date: Thu, 3 Apr 2003 23:42:47 +0200 Sender: linux-raid-owner@vger.kernel.org Message-ID: <009c01c2fa29$f7b2d290$2e77c23e@pentium4> References: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: To: "Peter L. Ashford" , Jonathan Vardy Cc: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-raid.ids > 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