Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262015AbTELJRs (ORCPT ); Mon, 12 May 2003 05:17:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262016AbTELJRs (ORCPT ); Mon, 12 May 2003 05:17:48 -0400 Received: from imhotep.hursley.ibm.com ([194.196.110.14]:56816 "EHLO tor.trudheim.com") by vger.kernel.org with ESMTP id S262015AbTELJRr (ORCPT ); Mon, 12 May 2003 05:17:47 -0400 Subject: Re: [OT] Two RAID1 mirrors are faster than three From: Anders Karlsson To: Clemens Schwaighofer Cc: LKML In-Reply-To: <3EBF5DF2.2080204@tequila.co.jp> References: <200305112212_MC3-1-386B-32BF@compuserve.com> <3EBF24A8.1050100@tequila.co.jp> <1052716203.4100.10.camel@tor.trudheim.com> <3EBF5DF2.2080204@tequila.co.jp> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-NgSuHPZHX3s99N9fG3pG" Organization: Trudheim Technology Limited Message-Id: <1052731825.3522.23.camel@tor.trudheim.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.4Rubber Turnip Date: 12 May 2003 10:30:25 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1545 Lines: 49 --=-NgSuHPZHX3s99N9fG3pG Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Mon, 2003-05-12 at 09:40, Clemens Schwaighofer wrote: > [db raid1 with 3 discs] >=20 > that sounds like a super special featuer never needed in Software (!!) > Raid thing (IMvHO). I think it depends greatly on your needs. For small companies running commercial unices, this might be the best solution based upon need and cost. For even smaller outfits running Linux, the snapshot feature in Linux LVM will do the job. For large operations where money is not really the issue, a SAN with some SAN Volume Controllers is probably the answer. Then there is the issue of people that are just simple ultra-paranoid about their data or where the 2nd copy is in fact off-site (using SCSI extenders). > I can only image a Hotspare Disc, thats all. In the tradition of Unix, there are more than one way to skin a cat. ;-) /Anders --=-NgSuHPZHX3s99N9fG3pG Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2-rc1-SuSE (GNU/Linux) iD8DBQA+v2mwLYywqksgYBoRAkAzAJ4kJ9CTh8ihMc/ZVcxcF6cIMB2cIgCdFPc4 MPyX5AUNMTgABfQhH/wxcmM= =8mh6 -----END PGP SIGNATURE----- --=-NgSuHPZHX3s99N9fG3pG-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/