From owner-freebsd-current@FreeBSD.ORG  Thu Oct 30 17:59:14 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 61BB116A4CE
	for <freebsd-current@freebsd.org>;
	Thu, 30 Oct 2003 17:59:14 -0800 (PST)
Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7172343FD7
	for <freebsd-current@freebsd.org>;
	Thu, 30 Oct 2003 17:59:13 -0800 (PST)
	(envelope-from wollman@khavrinen.lcs.mit.edu)
Received: from khavrinen.lcs.mit.edu (localhost [IPv6:::1])
	by khavrinen.lcs.mit.edu (8.12.9/8.12.9) with ESMTP id h9V1xADa026530
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256
	verify=OK CN=khavrinen.lcs.mit.edu issuer=SSL+20Client+20CA);
	Thu, 30 Oct 2003 20:59:10 -0500 (EST)
	(envelope-from wollman@khavrinen.lcs.mit.edu)
Received: (from wollman@localhost)
	by khavrinen.lcs.mit.edu (8.12.9/8.12.9/Submit) id h9V1xANi026527;
	Thu, 30 Oct 2003 20:59:10 -0500 (EST)
	(envelope-from wollman)
Date: Thu, 30 Oct 2003 20:59:10 -0500 (EST)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Message-Id: <200310310159.h9V1xANi026527@khavrinen.lcs.mit.edu>
To: Steve Lee <maillist@blitzen.net>
In-Reply-To: <Pine.LNX.4.44.0310301739540.22073-100000@neptune.blitzen.net>
References: <1067562792.27240.1.camel@desolation.livid.de>
	<Pine.LNX.4.44.0310301739540.22073-100000@neptune.blitzen.net>
X-Spam-Score: -19.8 ()
	IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,REPLY_WITH_QUOTES
X-Scanned-By: MIMEDefang 2.37
cc: freebsd-current@freebsd.org
Subject: Re: Software RAID
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 31 Oct 2003 01:59:14 -0000
X-List-Received-Date: Fri, 31 Oct 2003 01:59:14 -0000

<<On Thu, 30 Oct 2003 17:40:40 -0800 (PST), Steve Lee <maillist@blitzen.net> said:

> So there is no way to mirror the root so if one drive fails,
> i can't have the other drive boot up ?

There are ways to do that, but in order for that to work at all you
need to have BIOS support.  Some of the ATA ``RAID'' products work
like that: they have BIOS support for mirroring/failover, but the
operating system has to do all the work once it's booted.  FreeBSD
supports these controllers reasonably well, and they are quite
economical.

-GAWollman