From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 14:40:39 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 A86FA1065689 for ; Wed, 19 Oct 2011 14:40:39 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mx1.freebsd.org (Postfix) with ESMTP id 2A6738FC1D for ; Wed, 19 Oct 2011 14:40:39 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1RGXJt-0002Mo-S6 for freebsd-questions@freebsd.org; Wed, 19 Oct 2011 16:40:37 +0200 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Oct 2011 16:40:37 +0200 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Oct 2011 16:40:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Ivan Voras Date: Wed, 19 Oct 2011 16:40:23 +0200 Lines: 62 Message-ID: References: <20111019141443.GQ4592@pcjas.obspm.fr> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig26B48E778C196AE21FBE514A" X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:7.0.1) Gecko/20111004 Thunderbird/7.0.1 In-Reply-To: X-Enigmail-Version: 1.1.2 Cc: zfs-discuss@opensolaris.org Subject: Re: 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 14:40:39 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig26B48E778C196AE21FBE514A Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 19/10/2011 16:30, Fajar A. Nugraha wrote: > On Wed, Oct 19, 2011 at 9:14 PM, Albert Shih wro= te: >> 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 an= d 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 Free= BSD >> and ZFS manage the raid. >> >> which one is the best solution ? >=20 > Neither. >=20 > The best solution is to find a controller which can pass the disk as > JBOD (not encapsulated as virtual disk). Failing that, I'd go with (1) > (though others might disagree). Depending on the requirements and the purpose of the machine, it might idea to combine it by having the hardware handle multiple RAID-1 devices. E.g. if you want to implement RAID-10, you might create N RAID-1 volumes of two drives each in hardware. This is especially good since FreeBSD's ZFS doesn't yet handle hot spares. --------------enig26B48E778C196AE21FBE514A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6e4VcACgkQldnAQVacBcj83wCeL2nrV3r18Je7DbNSdxHXySOO BtIAn3tG2H6nOP544xeWR7kMwT5PcOAU =26RL -----END PGP SIGNATURE----- --------------enig26B48E778C196AE21FBE514A--