From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265478AbUAGXsM (ORCPT ); Wed, 7 Jan 2004 18:48:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265501AbUAGXsM (ORCPT ); Wed, 7 Jan 2004 18:48:12 -0500 Received: from tmr-02.dsl.thebiz.net ([216.238.38.204]:43532 "EHLO gatekeeper.tmr.com") by vger.kernel.org with ESMTP id S265478AbUAGXsF (ORCPT ); Wed, 7 Jan 2004 18:48:05 -0500 To: linux-kernel@vger.kernel.org Path: gatekeeper.tmr.com!davidsen From: davidsen@tmr.com (bill davidsen) Newsgroups: mail.linux-kernel Subject: Re: Best Low-cost IDE RAID Solution For 2.6.x? (OT?) Date: 7 Jan 2004 23:35:56 GMT Organization: TMR Associates, Schenectady NY Message-ID: References: <20031228180424.GA16622@mail-infomine.ucr.edu> <20031229190327.B5729@animx.eu.org> <20031230065439.GA1517@louise.pinerecords.com> <20031230094157.A7191@animx.eu.org> X-Trace: gatekeeper.tmr.com 1073518556 8087 192.168.12.62 (7 Jan 2004 23:35:56 GMT) X-Complaints-To: abuse@tmr.com Originator: davidsen@gatekeeper.tmr.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In article <20031230094157.A7191@animx.eu.org>, Wakko Warner wrote: | > > > nice about bad sectors as most hardware raid controllers. On the other | > > > hand the md driver kicks the ass of nearly every raid controller I've tried. | > > | > > Faster than the mylex extreme raid 2000? or one of the higher end adaptecs? | > | > Even faster than HP/Compaq cciss hwraid setups, yes. | | I've personally not had any experience with any hardware raid other than the | mylex DAC960 family. | | One thing that keeps me from using the linux raid sw is the fact it can't be | partitioned. I thought about lvm/evms, but I'm unwilling to make an initrd to | set it up (mounting root). Unfortunately boot loaders don't seem to support | anything other than raid1. (Mostly lilo, but I'm not sure grub would do this | either) What? You do the RAID on partitions, so you can do anything you want. They don't aven have to be the same type RAID, I once ran fours drives with a small 0+1 partiton (2+2) for reliability and read performance, and a large partition of the rest of the drives RAID-5. Different stripe size, because one array had many small reads and the other many large reads. You can do anything you have the guts to do, except change partition size once you are setup. -- bill davidsen CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.