From: Matthias Pigulla Date: March 20 1999 10:40am Subject: Re: RAID levels List-Archive: http://lists.mysql.com/mysql/684 Message-Id: <36F37B17.EC357FA@webfactory.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Kyle Cordes wrote: > that you need more drives for the same amount of net storage. 0+1 is > also more reliable in the sense that more than one drive can fail > (as long as they are not a mirrored pair) without losing data or > uptime. Wrong. With RAID 0+1, you can only lose one drive - the striped set will become corrupt and you have the mirror stripe set left. With RAID 1+0, which is striping over mirrored sets, you can still carry on as long as one mirror disk of each stripe part is alive. Matthias -- w e b f a c t o r y | matthias pigulla www.webfactory.de mp@stripped