From owner-freebsd-amd64@FreeBSD.ORG Fri Jun 17 23:38:01 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B18F816A41C for ; Fri, 17 Jun 2005 23:38:01 +0000 (GMT) (envelope-from jmartin37@speakeasy.net) Received: from mail27.sea5.speakeasy.net (mail27.sea5.speakeasy.net [69.17.117.29]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8914543D4C for ; Fri, 17 Jun 2005 23:38:01 +0000 (GMT) (envelope-from jmartin37@speakeasy.net) Received: (qmail 24071 invoked from network); 17 Jun 2005 23:38:01 -0000 Received: from dsl027-163-157.atl1.dsl.speakeasy.net (HELO [192.168.0.200]) (moonlightcheese@[216.27.163.157]) (envelope-sender ) by mail27.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP for ; 17 Jun 2005 23:38:01 -0000 Message-ID: <42B35EDB.1080308@speakeasy.net> Date: Fri, 17 Jun 2005 19:38:03 -0400 From: Jarrod Martin User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Adriaan de Groot References: <20050604234246.G69694@zoraida.natserv.net> <200506071749.28840.groot@kde.org> <20050617081853.GG1485@dragon.NUXI.org> <200506180051.17505.groot@kde.org> In-Reply-To: <200506180051.17505.groot@kde.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-amd64@freebsd.org Subject: Re: Which motherboard for RAID in AMD64? X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Jun 2005 23:38:01 -0000 Adriaan de Groot wrote: >On Friday 17 June 2005 10:18, David O'Brien wrote: > > >>On Tue, Jun 07, 2005 at 05:49:28PM +0200, Adriaan de Groot wrote: >> >> >>>Lots of motherboards have two RAID controllers on board. See, the VIA >>>KT800 chipset has one and some vendors add a second, like a promise, for >>>added value. 4 SATA connectors on the motherboard, on two different >>>controllers. >>> >>> >>Why do so many motherboard manufacturers do that? Is the SiI or Promise >>RAID controller ready better than the VIA one? >> >> no... it isn't. you can read most of the motherboard reviews and learn that the performance increases are slim to none for the secondary SATA controller. in fact performance on the included SATA controller is normally better (but by a negligible amount). > >Two is better than one. Iterate that a few times and you've got >four. I don't immediately see the advantage of the additional connectors >since you can't combine the 4 drives you might connect into a single array, >only as two separate arrays. Hey, but you could GEOM across controllers. I >haven't tried any performance measurements on the one controller or the other >-- I'm pleased that I can move the array from one controller to another and >that it works, that's enough for me. > >Sil (e.g. the Sil3114 on the nForce4-based Asus A8N-SLI) isn't >supported beyond "generic ata", right? I've not seen it mentioned in the >hardware notes for ages. > > >