From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Rabbitson Subject: Re: Help with chunksize on raid10 -p o3 array Date: Mon, 12 Mar 2007 22:16:01 +0100 Message-ID: <45F5C311.7030302@rabbit.us> References: <45ED4FE1.5020105@rabbit.us> <17908.55047.408840.852816@notabene.brown> <45F567BB.3090804@rabbit.us> <45F59FE0.2000307@sauce.co.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <45F59FE0.2000307@sauce.co.nz> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Richard Scobie wrote: > Peter Rabbitson wrote: > >> Is this anywhere near the top of the todo list, or for now raid10 >> users are bound to a maximum read speed of a two drive combination? > > I have not done any testing with the md native RAID10 implementations, > so perhaps there are some other advantages, but have you tried setting > up your 4 drives as a RAID 0 made up of a pair of RAID1s? The advantage is higher redundancy when I can have any two drives fail in a x3 layout unlike the raid1/0 setup, although I sacrifice available disk space. But yes, I agree that if I was after pure throughput raid1/0 would be more beneficial, with the downside of 1.5 disk failure redundancy.