From owner-freebsd-stable@FreeBSD.ORG Mon Feb 12 05:37:11 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 5DA0316A407 for ; Mon, 12 Feb 2007 05:37:11 +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 D190113C494 for ; Mon, 12 Feb 2007 05:37:10 +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 l1C5b89U020298 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 12 Feb 2007 16:07:09 +1030 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: "Patrick M. Hausen" Date: Mon, 12 Feb 2007 16:07:03 +1030 User-Agent: KMail/1.9.5 References: <00ad01c74b65$79db1710$0c00a8c0@Artem> <200702120940.42167.doconnor@gsoft.com.au> <20070211235138.GA53649@hugo10.ka.punkt.de> In-Reply-To: <20070211235138.GA53649@hugo10.ka.punkt.de> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart9523994.oP3DLl7YDS"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200702121607.05427.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 , freebsd-stable@freebsd.org 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: Mon, 12 Feb 2007 05:37:11 -0000 --nextPart9523994.oP3DLl7YDS Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Monday 12 February 2007 10:21, Patrick M. Hausen wrote: > > Software RAID won't help you if your primary disk gets an error in, say, > > the second stage loader. > > I don't really buy this "booting" arguement. What's the failure scenario > here? If the system is up and running, it will just keep humming along. > The SCSI or ATA layer is supposed to detach a failed drive and > geom will disable one part of the mirror. > > You can react appropriately when you get the failure message. Sure, if you're present. I regularly ship systems overseas where the power fails frequently. The=20 inability to boot because one disk got hosed is Bad News (tm). It depends on your exact situation, I was just pointing out that SW RAID=20 doesn't cover all the bases HW RAID does. Murphy dictates that the moment one of your disks down your system will=20 glitch/panic/etc and reboot and then you'll be stuffed :) =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 --nextPart9523994.oP3DLl7YDS Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQBFz/0B5ZPcIHs/zowRAl+pAJ4sDdKE38bW40SSEkT2pXnyhOq3EACaAs/N xgZPPwQnKxgr9cE9yosOxlg= =ipCK -----END PGP SIGNATURE----- --nextPart9523994.oP3DLl7YDS--