From owner-freebsd-questions@FreeBSD.ORG Tue Nov 18 16:26:42 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id E377B704 for ; Tue, 18 Nov 2014 16:26:41 +0000 (UTC) Received: from newmail.rmm.fr (newmail.rmm.fr [213.251.152.9]) by mx1.freebsd.org (Postfix) with ESMTP id 7B5B0EE8 for ; Tue, 18 Nov 2014 16:26:41 +0000 (UTC) Received: from newmail.rmm.fr (newmail.rmm.fr [213.251.152.9]) by newmail.rmm.fr (Postfix) with ESMTP id BF1B8A81C0 for ; Tue, 18 Nov 2014 17:26:35 +0100 (CET) X-Virus-Scanned: amavisd-new 2.8.0 (20120630) at rmm.fr Received: from newmail.rmm.fr ([213.251.152.9]) by newmail.rmm.fr (newmail.rmm.fr [213.251.152.9]) (amavisd-new, port 10026) with ESMTP id N96JZVta-F4r for ; Tue, 18 Nov 2014 17:26:35 +0100 (CET) Received: from newmail.rmm.fr (newmail.rmm.fr [87.98.206.99]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: hidden) by newmail.rmm.fr (Postfix) with ESMTPSA id 9028AA81BB for ; Tue, 18 Nov 2014 17:26:35 +0100 (CET) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Subject: Re: Hardware RAID or software for ZFS From: "bsd@todoo.biz" In-Reply-To: <546B6F7F.2010902@gmail.com> Date: Tue, 18 Nov 2014 17:26:35 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <9AAAB1C9-C75F-48BB-A21A-9979B61E44B5@todoo.biz> References: <7F1B1DC4-46CA-4B96-836B-2D2D494F60E8@todoo.biz> <546B6D72.3060105@qeng-ho.org> <546B6F7F.2010902@gmail.com> To: Liste FreeBSD X-Mailer: Apple Mail (2.1993) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Nov 2014 16:26:42 -0000 > Le 18 nov. 2014 =C3=A0 17:10, Andrei Brezan a = =C3=A9crit : >=20 >=20 > On 11/18/14 17:01, Arthur Chance wrote: >> On 18/11/2014 15:28, bsd@todoo.biz wrote: >>> Hi, >>>=20 >>>=20 >>> I would need your help in order to figure out which will be the best >> > in order to setup a server which will be used as a Poudriere = server. >>>=20 >>> My question is related to the usage of hardware RAID controller = (JBOD) >> > or software based controller (graid) >>>=20 >>> Server we are targeting is a SuperMicro 1018R-WC0R - 1U >>>=20 >>> I used to build my server using an HBA such as LSI SAS 9207-8i or = LSI >> > SAS 9201-16i Then I=E2=80=99ll configure the HBA as JBOD so that = disks can be >> > presented correctly to the system so that we can build our ZFS FS = on >> > top of that. >>>=20 >>>=20 >>> My sysadmin suggested me to get rid of the HBA and use direct >> > connectivity and Graid. >>>=20 >>>=20 >>> I would like to have some feedback on various aspects : >>>=20 >>> 1. performance >>> 2. usability >>> 3. problem one might have encountered >>=20 >> If you're intending to use ZFS don't use JBOD or graid, just tell = zpool to create a pool out of individual disks using raidz (or raidz[23] = if you have enough disks). >>=20 >> As for your hardware choice, I'll let others with more experience = than me answer. >>=20 >=20 > JBOD is presenting the disk directly to the OS so it is well suited = for a ZFS setup. There are still raid controllers that have both raid = capabilities and JBOD although some manufacturers try really hard to = separate them for $ome reason. Most of the times you can re-write the = firmware on such a device and have either raid capabilities or JBOD. >=20 Ok.=20 So with SAS disks, I=E2=80=99ll most probably need a controller / HBA = with JBOD capabilities ?=20 Like that disks will be presented directly to the OS where I=E2=80=99ll = handle the RAIDZ as needed.=20 Is that correct ?=20 Or is there any other =C2=AB native =C2=BB option ?=20 Thx very much.=20 ________________________________________________ = =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= = =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF= =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF Your provider of OpenSource Appliances www.osnet.eu =09 ________________________________________________ = =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= =C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7=C2=AB?=C2=BB=C2=A5=C2=AB?=C2=BB=C2=A7= = =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF= =C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2= =AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF=C2=AF PGP ID --> 0x1BA3C2FD