From owner-freebsd-questions@FreeBSD.ORG Thu May 4 23:37:40 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5715316A401 for ; Thu, 4 May 2006 23:37:40 +0000 (UTC) (envelope-from xfb52@dial.pipex.com) Received: from smtp-out4.blueyonder.co.uk (smtp-out4.blueyonder.co.uk [195.188.213.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id E12C143D46 for ; Thu, 4 May 2006 23:37:39 +0000 (GMT) (envelope-from xfb52@dial.pipex.com) Received: from [172.23.170.139] (helo=anti-virus01-10) by smtp-out4.blueyonder.co.uk with smtp (Exim 4.52) id 1FbnO5-0003Zh-SR; Fri, 05 May 2006 00:37:37 +0100 Received: from [80.192.58.117] (helo=[192.168.0.2]) by asmtp-out1.blueyonder.co.uk with esmtp (Exim 4.52) id 1FbnO5-0002i9-C9; Fri, 05 May 2006 00:37:37 +0100 Message-ID: <445A9040.6000005@dial.pipex.com> Date: Fri, 05 May 2006 00:37:36 +0100 From: Alex Zbyslaw User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-GB; rv:1.7.12) Gecko/20060305 X-Accept-Language: en MIME-Version: 1.0 To: Robert Fitzpatrick References: <1146785055.6860.50.camel@columbus.webtent.org> In-Reply-To: <1146785055.6860.50.camel@columbus.webtent.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD Subject: Re: Software RAID guidance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 May 2006 23:37:40 -0000 Robert Fitzpatrick wrote: >I have an old NT4 PIII here that has a pair Adaptec Array1000 Family >controllers with 2 pairs of identical drives on one of them (2 IBM 9GB >and 2 Seagate 35GB). From what I googled, *nix does not support the >controller, so I have removed the RAID arrays and loaded FreeBSD 6.0 >onto the two IBM drives. Now, I wanted to mirror the other two for data >and looking for guidance as to whether it is first of all suited for >software RAID and if so, CCD or vinum. I am contemplating vinum because >the handbook mentions CCD is when cost is the important factor and for >me, is reliability. What would someone suggest? If vinum, one thing I >don't quite understand is do I create the partitions to be used in the >device? There doesn't seem to be a man for gvinum and the link to it in >the handbook section 19.6.1 is broken. > > Just to give you another option. You can support RAID1 using atacontrol to just make two disk into a RAID. Plenty of posts in the archive with more info. As an outsider (i.e. without any RAID) this option always seemed the simplest. No doubt other with experience can tell you the relative merits of atacontrol vs gmirror. --Alex