From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262127AbTL1XF1 (ORCPT ); Sun, 28 Dec 2003 18:05:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262130AbTL1XF1 (ORCPT ); Sun, 28 Dec 2003 18:05:27 -0500 Received: from neon-gw-l3.transmeta.com ([63.209.4.196]:61969 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id S262127AbTL1XFU (ORCPT ); Sun, 28 Dec 2003 18:05:20 -0500 To: linux-kernel@vger.kernel.org From: "H. Peter Anvin" Subject: Re: Best Low-cost IDE RAID Solution For 2.6.x? (OT?) Date: 28 Dec 2003 15:05:13 -0800 Organization: Transmeta Corporation, Santa Clara CA Message-ID: References: <20031228180424.GA16622@mail-infomine.ucr.edu> <20031228213535.GA21459@mail-infomine.ucr.edu> <1072647938.10298.3.camel@laptop.fenrus.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Disclaimer: Not speaking for Transmeta in any way, shape, or form. Copyright: Copyright 2003 H. Peter Anvin - All Rights Reserved Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Followup to: <1072647938.10298.3.camel@laptop.fenrus.com> By author: Arjan van de Ven In newsgroup: linux.dev.kernel > > On Sun, 2003-12-28 at 22:35, Johannes Ruscheinski wrote: > > > Fisrt of all: thanks for the advice Joel! Two questions: why not use the > > hardware raid capability of the Promise tx4000 and if we'd use software > > raid instead, what would be the CPU overhead? > > be careful, almost all ata raid controllers out there are *software > raid* hidden in a binary only driver. Also generally the on-disk format > of these is quite unfortionate resulting in slower access than linux > software raid can do... > Not to mention, well, *proprietary*. Consider this: with Linux swraid, you don't have to worry about your manufacturer discontinuing your product or going out of business; as long as you can connect your disks to a CPU using any kind of controller you can recover your data. If a proprietary RAID controller croaks, and you can't get another one of the same brand/model, you might have no more data... -hpa -- at work, in private! If you send me mail in HTML format I will assume it's spam. "Unix gives you enough rope to shoot yourself in the foot." Architectures needed: ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64