From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wiliam Colls Subject: Re: Raid 6--best practices Date: Fri, 20 Jan 2012 00:28:12 -0500 Message-ID: <4F18FB6C.2090803@rogers.com> References: <4F173D3D.6070902@npr.org>, Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Shain Miley Cc: "linux-raid@vger.kernel.org" List-Id: linux-raid.ids On 01/19/2012 09:54 PM, Shain Miley wrote: > Hello all, > I have been doing some research into possible alternatives to our > OpenSolaris/ZFS/Gluster file server. The main reason behind this is, > due to RedHat's recent purchase of Gluster, our current configuration > will no longer be supported and even before the acquisition, the upgrade > path for the OpenSolaris/ZFS stack was murky at best. > > The current servers in question consist of a total of 48, 2TB drives. > My thought was that I would setup a total of 6 RAID-6 arrays (each > containing 7 drives + a spare or a flat 8 drive RAID-6 config) and place > LVM + XFS on top of that. > > My questions really are: > > a) What is the maximum number of drives typically seen in a RAID-6 > setup like this? I noticed when looking at the Backblaze blog, that > they are using RAID-6 with 15 disks (13 + 2 for parity). That number seemed > kind of high to me....but I was wondering what others on the list thought. > > b) Would you recommend using any specific Linux distro over any other? > Right now I am trying to decide between Debian and Ubuntu....but I would be open to > any others...if there was a legitimate reason to do so (performance, stability, etc) in terms of the Raid codebase. > > Thanks in advance, > > Shain > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > No comment on the Raid6 question. I have been using Ubuntu for the last 4 or 5 years. For my money, the best feature is the defined release intervals, and the Long Term Support (LTS) commitment of 5 years for specified releases, and easy upgrade path when moving to a new release. Just my $0.02 Cdn. -- I know that you believe that you understand what you think I said, but I am not sure that you realise that what you heard was not what I meant.