From owner-freebsd-stable@FreeBSD.ORG Sun Feb 11 23:10:57 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8FD9316A406 for ; Sun, 11 Feb 2007 23:10:57 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.freebsd.org (Postfix) with ESMTP id 20F3413C461 for ; Sun, 11 Feb 2007 23:10:54 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.gsoft.com.au (inchoate.gsoft.com.au [203.31.81.25]) (authenticated bits=0) by cain.gsoft.com.au (8.13.5/8.13.4) with ESMTP id l1BNAmYW001660 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 12 Feb 2007 09:40:48 +1030 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: freebsd-stable@freebsd.org Date: Mon, 12 Feb 2007 09:40:18 +1030 User-Agent: KMail/1.9.5 References: <00ad01c74b65$79db1710$0c00a8c0@Artem> <01e601c74c5d$31be19c0$0c00a8c0@Artem> <20070211140444.GB40782@hugo10.ka.punkt.de> In-Reply-To: <20070211140444.GB40782@hugo10.ka.punkt.de> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1577926.I2ARgh5ztK"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200702120940.42167.doconnor@gsoft.com.au> X-Spam-Score: -1.36 () ALL_TRUSTED X-Scanned-By: MIMEDefang 2.57 on 203.31.81.10 Cc: Artem Kuchin Subject: Re: What is a good choice of sata-ii raid controller for freebsd? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Feb 2007 23:10:57 -0000 --nextPart1577926.I2ARgh5ztK Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Monday 12 February 2007 00:34, Patrick M. Hausen wrote: > One guy that I happen to know, who was responsible for the database > backend servers of Germany's biggest web mail provider at the time, > ran extensive benchmarks. Result: for RAID 1, RAID 0 and RAID 1+0 > there is no difference in "hardware RAID" vs. OS mirroring and > striping. He used Linux, but I'd bet a huge amount that his > findings can be transferred to arbitrary current operating systems. Software RAID won't help you if your primary disk gets an error in, say, th= e=20 second stage loader. =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart1577926.I2ARgh5ztK Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQBFz6Jy5ZPcIHs/zowRAlbIAJ9A/gGege0jB6sepPlpz3CRXX+yAQCeJ2sH RnA3rPfsu+Wp5cW9l4rKN7U= =W79B -----END PGP SIGNATURE----- --nextPart1577926.I2ARgh5ztK--