From mboxrd@z Thu Jan 1 00:00:00 1970 From: Goswin von Brederlow Subject: Re: raid-0 with mdadm vs lvm striping Date: Wed, 12 Aug 2009 10:41:46 +0200 Message-ID: <87vdkt4e5x.fsf@frosties.localdomain> References: <3ECBDC05781B3D48ABD520A01ABF2F9B2E99EDBB63@SE-EX008.groupinfra.com> <3ECBDC05781B3D48ABD520A01ABF2F9B2E9A0485D5@SE-EX008.groupinfra.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <3ECBDC05781B3D48ABD520A01ABF2F9B2E9A0485D5@SE-EX008.groupinfra.com> (Andrew Henry's message of "Wed, 12 Aug 2009 08:55:01 +0200") Sender: linux-raid-owner@vger.kernel.org To: "Henry, Andrew" Cc: Drew , "linux-raid@vger.kernel.org" List-Id: linux-raid.ids "Henry, Andrew" writes: >> If you run LVM on top of raid you can have both. :-) All my servers >> run this config and it makes things easy to move around as needed, in >> fact a couple of times it saved my data (and my bacon). And with newer >> versions of mdadm, you can create some interesting raid configs that >> LVM has no chance of creating. >> >> So why striping? Aside from faster speeds, raid-0 is anything but redundant. >> -- >> Drew > > I need the speed, pure and simple. It's going to be used as a scratch volume. I already have a mirrored raid array with mdadm for my "real" data and backups, but I need something faster just to store temporary files on. > > --andrew But why raid0 instead of striped lvm? Does that make a difference in speed? MfG Goswin