From owner-freebsd-questions@freebsd.org Tue Apr 19 14:34:31 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 51445B14090 for ; Tue, 19 Apr 2016 14:34:31 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (smtp.infracaninophile.co.uk [IPv6:2001:8b0:151:1:c4ea:bd49:619b:6cb3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C03B91A14 for ; Tue, 19 Apr 2016 14:34:30 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from zero-gravitas.local (unknown [85.199.232.226]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: m.seaman@infracaninophile.co.uk) by smtp.infracaninophile.co.uk (Postfix) with ESMTPSA id 7DFD61110A for ; Tue, 19 Apr 2016 14:34:27 +0000 (UTC) Authentication-Results: smtp.infracaninophile.co.uk; dmarc=none header.from=infracaninophile.co.uk DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=infracaninophile.co.uk; s=201601-infracaninophile; t=1461076467; bh=Lf9pzIV1icFbNhkDljKmnP1heP48xD754ld4B3t99p4=; h=Subject:To:References:From:Date:In-Reply-To; z=Subject:=20Re:=20Raid=201+0|To:=20freebsd-questions@freebsd.org|R eferences:=20<571533F4.8040406@bananmonarki.se>|From:=20Matthew=20 Seaman=20|Date:=20Tue,=2019=20Apr =202016=2015:35:12=20+0100|In-Reply-To:=20<571533F4.8040406@bananm onarki.se>; b=GHo7vLgIW9zkVJ9lXzypMUjwSSNsCvzXJG8smldZ1eCAFqU78Dc24Mcx2IMPQFetj p2UEbT14TF8ervzoWQO3uJC93Kg77qAXWIx0wGh4E5Yst0pBuKPMXd0/cofd9w0Vpw JQTwx1p+7sLwvky2ofjaGFKtgEjo416IeYO0Q8c4= Subject: Re: Raid 1+0 To: freebsd-questions@freebsd.org References: <571533F4.8040406@bananmonarki.se> From: Matthew Seaman Message-ID: <57164220.2000806@infracaninophile.co.uk> Date: Tue, 19 Apr 2016 15:35:12 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <571533F4.8040406@bananmonarki.se> Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="CX3b2iGKK8aIsBgs1vggipEiNAGXJbUWA" X-Virus-Scanned: clamav-milter 0.99.1 at smtp.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,RDNS_NONE,SPF_FAIL autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on smtp.infracaninophile.co.uk X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Apr 2016 14:34:31 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --CX3b2iGKK8aIsBgs1vggipEiNAGXJbUWA Content-Type: multipart/mixed; boundary="wkT1DrqnmKEiPAiiIsDQg0Cafd6F7T9pD" From: Matthew Seaman To: freebsd-questions@freebsd.org Message-ID: <57164220.2000806@infracaninophile.co.uk> Subject: Re: Raid 1+0 References: <571533F4.8040406@bananmonarki.se> In-Reply-To: <571533F4.8040406@bananmonarki.se> --wkT1DrqnmKEiPAiiIsDQg0Cafd6F7T9pD Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2016/04/18 20:22, Bernt Hansson wrote: > Newfs/mount all work. My question, is this a raid 1+0 or 0+1? > More info can be posted if need be. This is a RAID 10 setup. That's the good way round. For some reason these RAID setups are referred to as 'RAID 10' (striped mirrors, good) or 'RAID 0+1' (mirrored stripes, bad). No idea why one gets a '+' and the other not... Note that on-board ATA Raid is often pretty simplistic. It's basically a software RAID setup without any benefit of hardware acceleration. There's no real benefit to using it over using gmirror(8), and typically a fairly big lack of support for hot swapping drives or resync'ing the mirror without taking the system down, all of which you do get with gmirror(8). Cheers, Matthew --wkT1DrqnmKEiPAiiIsDQg0Cafd6F7T9pD-- --CX3b2iGKK8aIsBgs1vggipEiNAGXJbUWA Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQJ8BAEBCgBmBQJXFkIgXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQxOUYxNTRFQ0JGMTEyRTUwNTQ0RTNGMzAw MDUxM0YxMEUwQTlFNEU3AAoJEABRPxDgqeTnPOcP/1vu7vu/EW0qQnVeYT0DhQ2k mOtWZBaZKbfBAEnik8r9eGchXW7G4CtgzmCIlqTzi2dSiW0CgP2kij5vxqQS62Co L+ta/sn+zAzLpJnwWstD1Yq+gNFFEJ/dJmboe0TSfYzAhurJZb7DwiZusPvH4+8d Q1hrHuGbZ4wu3ucA7Mmw309V0bRhaCyuiZgQWB/xMwMs/0d7YOEMqNSnaryrLku4 26rAPVRsr6jsCYj0btWN2+04NRCR5v/c2k6rqi1FZvNrnVfFuAw7qtjq8xstkpgT MVxNfkxGM2TdUqCp+3vMpkq5s4Dz2ZSnASa3hep4PwBqof9qIrUfOGDC3jfDe1Q2 WdSu3cJpfzR+mU0GvgUaFMytjes8Kzt1D/0Wl5i5wTwONWzi1nkWB2X4yjfdS+N5 i0VN2kSMwl/+yisRDVCV+Cw0dVq5h/rUOmouEBeVY302NGYlgjq23mujWazxWwDz z7qiFauxVM14ik49bZoFvcHmzhTtEKkjVGGAHoa+xPrsO4VPf/E8eEhqZXRIY4/W MMDJXKbeWj+zzDzJ4LcD9jc/mrtWp6KOKf74sq6OoG1xmPQ1D7YW7LzAjZahBMl+ Xfh1MY/oE6JskvBD+pj1/mwILCPR36Y/CKUWSFzYU+RpeJ3hWH3NWRn9g/vYQ7vX mqcVMtZn3szC5OlnFKtZ =NHqT -----END PGP SIGNATURE----- --CX3b2iGKK8aIsBgs1vggipEiNAGXJbUWA--