From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 14:14:46 2011 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 897AD106566C for ; Wed, 19 Oct 2011 14:14:46 +0000 (UTC) (envelope-from Albert.Shih@obspm.fr) Received: from spock-ext.obspm.fr (spock-ext.obspm.fr [145.238.186.3]) by mx1.freebsd.org (Postfix) with ESMTP id 23E298FC19 for ; Wed, 19 Oct 2011 14:14:45 +0000 (UTC) Received: from pcjas.obspm.fr (pcjas.obspm.fr [145.238.184.233]) by spock-ext.obspm.fr (8.14.3/8.14.3/DIO Observatoire de Paris - 15/04/10) with ESMTP id p9JEEhop005145 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 19 Oct 2011 16:14:44 +0200 Date: Wed, 19 Oct 2011 16:14:43 +0200 From: Albert Shih To: freebsd-questions@freebsd.org, zfs-discuss@opensolaris.org Message-ID: <20111019141443.GQ4592@pcjas.obspm.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.21 (2010-09-15) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.3.4 (spock-ext.obspm.fr [145.238.186.20]); Wed, 19 Oct 2011 16:14:44 +0200 (CEST) X-Virus-Scanned: clamav-milter 0.97.2 at spock-ext.obspm.fr X-Virus-Status: Clean Cc: Subject: ZFS on Dell with FreeBSD 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: Wed, 19 Oct 2011 14:14:46 -0000 Hi Sorry to cross-posting. I don't knwon which mailing-list I should post this message. I'll would like to use FreeBSD with ZFS on some Dell server with some MD1200 (classique DAS). When we buy a MD1200 we need a RAID PERC H800 card on the server so we have two options : 1/ create a LV on the PERC H800 so the server see one volume and put the zpool on this unique volume and let the hardware manage the raid. 2/ create 12 LV on the perc H800 (so without raid) and let FreeBSD and ZFS manage the raid. which one is the best solution ? Any advise about the RAM I need on the server (actually one MD1200 so 12x2To disk) Regards. JAS -- Albert SHIH DIO batiment 15 Observatoire de Paris 5 Place Jules Janssen 92195 Meudon Cedex Téléphone : 01 45 07 76 26/06 86 69 95 71 Heure local/Local time: mer 19 oct 2011 16:11:40 CEST