Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262179AbTELOou (ORCPT ); Mon, 12 May 2003 10:44:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262185AbTELOou (ORCPT ); Mon, 12 May 2003 10:44:50 -0400 Received: from gate.in-addr.de ([212.8.193.158]:446 "EHLO mx.in-addr.de") by vger.kernel.org with ESMTP id S262179AbTELOot (ORCPT ); Mon, 12 May 2003 10:44:49 -0400 Date: Mon, 12 May 2003 16:56:24 +0200 From: Lars Marowsky-Bree To: Clemens Schwaighofer , Anders Karlsson Cc: LKML Subject: Re: Two RAID1 mirrors are faster than three Message-ID: <20030512145624.GZ10519@marowsky-bree.de> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <3EBF5DF2.2080204@tequila.co.jp> User-Agent: Mutt/1.4i X-Ctuhulu: HASTUR Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 880 Lines: 27 On 2003-05-12T17:40:18, Clemens Schwaighofer said: > that sounds like a super special featuer never needed in Software (!!) > Raid thing (IMvHO). No. 3way mirroring is actually rather useful. You can take a failure and _still_ be fully redundant (ie, like a hot-spare, just already synced). In theory, you could even read from three drives and correct errors on one drive. Sincerely, Lars Marowsky-Br?e -- SuSE Labs - Research & Development, SuSE Linux AG "If anything can go wrong, it will." "Chance favors the prepared (mind)." -- Capt. Edward A. Murphy -- Louis Pasteur - 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/