From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Subject: Re: Another new users' guide to installing Linux software RAID 10 Date: Wed, 20 Aug 2008 00:21:45 +0200 Message-ID: <20080819222145.GA6261@rap.rap.dk> References: <923541.95602.qm@web88303.mail.re4.yahoo.com> <48AAFD7A.2070606@anonymous.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Return-path: Content-Disposition: inline In-Reply-To: <48AAFD7A.2070606@anonymous.org.uk> Sender: linux-raid-owner@vger.kernel.org To: John Robinson Cc: Linux RAID List-Id: linux-raid.ids On Tue, Aug 19, 2008 at 06:06:02PM +0100, John Robinson wrote: > On 19/08/2008 15:25, Bruce Miller wrote: > >Another article has appeared on a mainstream Linux web site which aims to > >smooth the installation of Linux RAID 10 for beginners: > >http://howtoforge.com/install-ubuntu-with-software-raid-10 > > > >As someone who merely lurks on this list and almost never posts, I do not > >dare to assess the accuracy or soundness of this article. But Howtoforge > >has a certain popularity among users who are not full-time IT > >professionals. > > > >It might be useful if one of the experts on this site looked at the > >article; if you find it worthwhile, perhaps a link could be added to > >wiki.linux-raid.osdl.org. > > I don't claim to be an expert, but... > > 1. "Raid 10 is the fastest RAID level that also has good redundancy > too". This isn't necessarily true. > > 2. The configuration suggested will crash if any disc crashes, because > it has swap on raw disc partitions. > > 3. The configuration suggested cannot reboot if the first disc crashes > because /boot is on a raw partition on the first disc only. > > If I've got this all wrong, please let me know... I think you are right. Also it is claimed that you need 4 disk drives to do it, while you can run raid10 with just 2 drives. And he does not mention our wiki nor raid10,f2. Best regards keld