From owner-freebsd-questions@FreeBSD.ORG Thu Sep 21 13:48:05 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5E4A316A40F for ; Thu, 21 Sep 2006 13:48:05 +0000 (UTC) (envelope-from elessar@bsdforen.de) Received: from fix.bsdforen.de (bsdforen.de [212.204.60.79]) by mx1.FreeBSD.org (Postfix) with ESMTP id C581943D53 for ; Thu, 21 Sep 2006 13:48:03 +0000 (GMT) (envelope-from elessar@bsdforen.de) Received: by fix.bsdforen.de (Postfix, from userid 20000) id 7DDFF44A419; Thu, 21 Sep 2006 15:48:02 +0200 (CEST) Received: from localhost (localhost [127.0.0.2]) by fix.bsdforen.de (Postfix) with ESMTP id 3C1A944A410; Thu, 21 Sep 2006 15:48:01 +0200 (CEST) X-Virus-Scanned: amavisd-new at bsdforen.de Received: from fix.bsdforen.de ([127.0.0.2]) by localhost (fix.bsdforen.de [127.0.0.2]) (amavisd-new, port 10024) with LMTP id u4nBhmy5af7E; Thu, 21 Sep 2006 15:48:00 +0200 (CEST) Received: from loki.starkstrom.lan (p54A4603C.dip.t-dialin.net [84.164.96.60]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by fix.bsdforen.de (Postfix) with ESMTP id 155C344A40D; Thu, 21 Sep 2006 15:47:59 +0200 (CEST) Date: Thu, 21 Sep 2006 15:47:58 +0200 From: Joerg Pernfuss To: freebsd-geom@freebsd.org Message-ID: <20060921154758.6d609b07@loki.starkstrom.lan> In-Reply-To: <45122531.6010503@infracaninophile.co.uk> References: <20060920222944.M1031@ganymede.hub.org> <45122531.6010503@infracaninophile.co.uk> X-Mailer: Sylpheed-Claws 2.2.3 (GTK+ 2.8.9; i386-portbld-freebsd6.1) Mime-Version: 1.0 X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Thu Sep 21 15:48:02 2006 X-DSPAM-Confidence: 0.9988 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 45129812886361680728247 Content-Type: multipart/mixed; boundary=DSPAM_MULTIPART_EX-88636 Cc: freebsd-questions@freebsd.org Subject: Re: geom - help ... 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: Thu, 21 Sep 2006 13:48:05 -0000 --DSPAM_MULTIPART_EX-88636 Content-Type: multipart/signed; boundary=Sig_bJCzycZOewlS1bzeFRk_pml; protocol="application/pgp-signature"; micalg=PGP-SHA1 --Sig_bJCzycZOewlS1bzeFRk_pml Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable On Thu, 21 Sep 2006 06:37:53 +0100 Matthew Seaman wrote: > Marc G. Fournier wrote: > > So, again, if I'm reading through things correctly, I'll have to do > > something like: > >=20 > > gstripe st1 da1 da2 > > gstripe st2 da3 da4 > > gmirror drive st1 st2 > > newfs drive >=20 > That's the wrong way round, I think. Not exactly. This is RAID 0+1 (mirrored stripes) as he said. What you described is RAID10 (striped mirrors). And as you pointed out, if one has the choice, going with 10 is better for most cases, as the failure case behaviour is much better. It can have better performance in some cases though - at the cost of reliability. J=F6rg --=20 | /"\ ASCII ribbon | GnuPG Key ID | e86d b753 3deb e749 6c3a | | \ / campaign against | 0xbbcaad24 | 5706 1f7d 6cfd bbca ad24 | | X HTML in email | .the next sentence is true. | | / \ and news | .the previous sentence was a lie. | --Sig_bJCzycZOewlS1bzeFRk_pml Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFFEpgOH31s/bvKrSQRApejAJ9bXykkHV48AzYzPV86N9tSwpA2QgCeJpr2 NVCmT1tJuLIgGg6hHwM9adw= =5Bg8 -----END PGP SIGNATURE----- --Sig_bJCzycZOewlS1bzeFRk_pml-- --DSPAM_MULTIPART_EX-88636 Content-Type: text/plain X-DSPAM-Signature: 45129812886361680728247 !DSPAM:45129812886361680728247! --DSPAM_MULTIPART_EX-88636--