From owner-freebsd-questions@FreeBSD.ORG Thu Jun 12 07:30:40 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 58BBD106568C for ; Thu, 12 Jun 2008 07:30:40 +0000 (UTC) (envelope-from iwrTech@iwr.ru.ac.za) Received: from f.mail.ru.ac.za (f.mail.ru.ac.za [IPv6:2001:4200:1010::25:6]) by mx1.freebsd.org (Postfix) with ESMTP id 7E63E8FC1A for ; Thu, 12 Jun 2008 07:30:39 +0000 (UTC) (envelope-from iwrTech@iwr.ru.ac.za) Received: from iwr.ru.ac.za ([146.231.64.249]:61306) by f.mail.ru.ac.za with esmtp (Exim 4.68 (FreeBSD)) (envelope-from ) id 1K6hGU-000ASd-55 for freebsd-questions@freebsd.org; Thu, 12 Jun 2008 09:30:34 +0200 Received: from iwr61.iwr.ru.ac.za ([146.231.64.161]) by iwr.ru.ac.za with esmtp (Exim 4.69 (FreeBSD)) (envelope-from ) id 1K6hGU-0000EC-59 for freebsd-questions@freebsd.org; Thu, 12 Jun 2008 09:30:34 +0200 From: "DA Forsyth" Organization: IWR To: freebsd-questions@freebsd.org Date: Thu, 12 Jun 2008 09:30:31 +0200 MIME-Version: 1.0 Message-ID: <4850ECB7.17075.4CC752B2@iwrtech.iwr.ru.ac.za> Priority: normal In-reply-to: <20080610150536.GA67056@owl.midgard.homeip.net> References: <484EACEB.7169.43FE1258@iwrtech.iwr.ru.ac.za>, <20080610165435.M68290@wojtek.tensor.gdynia.pl>, <20080610150536.GA67056@owl.midgard.homeip.net> X-mailer: Pegasus Mail for Windows (4.41) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body X-Virus-Scanned: f.mail.ru.ac.za (146.231.129.38) Subject: Re: xRAID disks.... X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: iwrTech@iwr.ru.ac.za List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jun 2008 07:30:40 -0000 On 10 Jun 2008 , Erik Trulsson entreated about "Re: xRAID disks....": > On Tue, Jun 10, 2008 at 04:56:07PM +0200, Wojciech Puchar wrote: > > > > > > The pair of ex-RAID disks are ad1 and ad2 and obviously are no longer > > > a raid pair, yet 'something' is telling the ar() driver to try and > > > pair them and failing because there is no raid hardware in that box. > > > > there are no "raid hardware" on most devices. it's just marketing hype. > > Most (cheap) RAID controllers do almost everything in software. Some do have > hardware support. this was not a cheap card, it is an Adaptec 2400A. 4 disks. It can do RAID5 too but I never tried that, having needed 2 mirror pairs instead. the new motherboard is an Intel D965 with 6 SATA sockets, 4 of which are now supporting the new RAID5 array (4x400Gb disks). whether is is the RAID hardware or just because it is SATA2, it is damn fast compared to IDE. pleased so far. oh, not booting off this, it is just data (and the old IDE mirror disks must now work in the non RAID backup server) -- DA Fo rsyth Network Supervisor Principal Technical Officer -- Institute for Water Research http://www.ru.ac.za/institutes/iwr/