From owner-freebsd-stable@FreeBSD.ORG Mon Feb 12 08:37:52 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 C6A1716A402 for ; Mon, 12 Feb 2007 08:37:52 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from turion.vk2pj.dyndns.org (c220-239-3-125.belrs4.nsw.optusnet.com.au [220.239.3.125]) by mx1.freebsd.org (Postfix) with ESMTP id 537B213C471 for ; Mon, 12 Feb 2007 08:37:51 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from turion.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by turion.vk2pj.dyndns.org (8.13.8/8.13.8) with ESMTP id l1C8bmMj011039; Mon, 12 Feb 2007 19:37:48 +1100 (EST) (envelope-from peter@turion.vk2pj.dyndns.org) Received: (from peter@localhost) by turion.vk2pj.dyndns.org (8.13.8/8.13.8/Submit) id l1C8bmVG011038; Mon, 12 Feb 2007 19:37:48 +1100 (EST) (envelope-from peter) Date: Mon, 12 Feb 2007 19:37:48 +1100 From: Peter Jeremy To: "Daniel O'Connor" Message-ID: <20070212083748.GA837@turion.vk2pj.dyndns.org> References: <00ad01c74b65$79db1710$0c00a8c0@Artem> <200702120940.42167.doconnor@gsoft.com.au> <20070211235138.GA53649@hugo10.ka.punkt.de> <200702121607.05427.doconnor@gsoft.com.au> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="dDRMvlgZJXvWKvBx" Content-Disposition: inline In-Reply-To: <200702121607.05427.doconnor@gsoft.com.au> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.13 (2006-08-11) Cc: 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 08:37:52 -0000 --dDRMvlgZJXvWKvBx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2007-Feb-12 16:07:03 +1030, Daniel O'Connor wrot= e: >I regularly ship systems overseas where the power fails frequently. The=20 >inability to boot because one disk got hosed is Bad News (tm). A decent UPS can help here. >It depends on your exact situation, I was just pointing out that SW RAID= =20 >doesn't cover all the bases HW RAID does. If the disk is dead then the BIOS will skip it and the system should boot normally (I've tested this by pulling a disk since I didn't have a suitable dead disk to hand). A hard error in the 2nd stage boot loader, ficl or the kernel is definitely the worst case - I agree that this is very difficult for software raid to recover from. Note that even with hardware raid, there are still lots of failure points. The least reliable parts of a current computer are the CPU and PSU fans, not the disks. --=20 Peter Jeremy --dDRMvlgZJXvWKvBx Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFF0Cdc/opHv/APuIcRAtsoAJ9JCaMOgd5DYUPsMQeG6Cak66AU/ACfROPM dDL/LSmXPR1Q/uFm2cuhJBE= =0qTu -----END PGP SIGNATURE----- --dDRMvlgZJXvWKvBx--