From owner-freebsd-hardware@FreeBSD.ORG Tue Sep 18 20:56:39 2007 Return-Path: Delivered-To: hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0E24216A41B for ; Tue, 18 Sep 2007 20:56:39 +0000 (UTC) (envelope-from work@ashleymoran.me.uk) Received: from mercureh.reacthosting.com (reacthosting.com [195.177.245.34]) by mx1.freebsd.org (Postfix) with ESMTP id C9B6613C468 for ; Tue, 18 Sep 2007 20:56:38 +0000 (UTC) (envelope-from work@ashleymoran.me.uk) Received: from 81-86-43-170.dsl.pipex.com ([81.86.43.170] helo=[192.168.52.2]) by mercureh.reacthosting.com with esmtpa (Exim 4.66 (FreeBSD)) (envelope-from ) id 1IXjiU-0008aw-JV; Tue, 18 Sep 2007 21:30:42 +0100 In-Reply-To: <46EDDDD0.2070409@jonny.eng.br> References: <46EDDDD0.2070409@jonny.eng.br> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: quoted-printable From: Ashley Moran Date: Tue, 18 Sep 2007 21:30:40 +0100 To: =?ISO-8859-1?Q?Jo=E3o_Carlos_Mendes_Lu=EDs?= X-Mailer: Apple Mail (2.752.2) X-PopBeforeSMTPSenders: work@ashleymoran.me.uk X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mercureh.reacthosting.com X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [26 6] X-AntiAbuse: Sender Address Domain - ashleymoran.me.uk X-Source: X-Source-Args: X-Source-Dir: Cc: hardware@freebsd.org Subject: Re: SATA mirrror performance X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Sep 2007 20:56:39 -0000 On Sep 17, 2007, at 2:52 am, Jo=E3o Carlos Mendes Lu=EDs wrote: > After using gmirror, now I have the RAID in its full performance, > getting over 60Mbytes per second at raw reads, very near the 70MBps =20= > from > the specs. Could only be better if we already had NCQ working. > > Now the question: Is this expected? Is ataraid somehow deprecated? I had no end of trouble with ataraid. At first I was under the =20 impression it was the best solution, seeing as it has some support =20 from the motherboard. But after posting to a list (possibly -=20 hardware) a long time ago, all the answers I got were to use =20 gmirror. I don't know that ataraid is deprecated, but I can't think =20 of any reason to use it. Fortunately (as you have found), turning an =20= ataraid mirror into a gmirror is easy. I would just use gmirror and =20 not worry about it. Ashley=