----- Original Message ----- > From: "Heiko Krämer" <hkraemer@xxxxxxxxxxx> > To: "gluster-users@xxxxxxxxxxx List" <gluster-users@xxxxxxxxxxx> > Sent: Monday, December 9, 2013 8:18:28 AM > Subject: Gluster infrastructure question > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Heyho guys, > > I'm running since years glusterfs in a small environment without big > problems. > > Now I'm going to use glusterFS for a bigger cluster but I've some > questions :) > > Environment: > * 4 Servers > * 20 x 2TB HDD, each > * Raidcontroller > * Raid 10 > * 4x bricks => Replicated, Distributed volume > * Gluster 3.4 > > 1) > I'm asking me, if I can delete the raid10 on each server and create > for each HDD a separate brick. > In this case have a volume 80 Bricks so 4 Server x 20 HDD's. Is there > any experience about the write throughput in a production system with > many of bricks like in this case? In addition i'll get double of HDD > capacity. Have a look at: http://rhsummit.files.wordpress.com/2012/03/england-rhs-performance.pdf Specifically: ● RAID arrays ● More RAID LUNs for better concurrency ● For RAID6, 256-KB stripe size I use a single RAID 6 that is divided into several LUNs for my bricks. For example, on my Dell servers(with PERC6 RAID controllers) each server has 12 disks that I put into raid 6. Then I break the RAID 6 into 6 LUNs and create a new PV/VG/LV for each brick. From there I follow the recommendations listed in the presentation. HTH! -b > 2) > I've heard a talk about glusterFS and out scaling. The main point was > if more bricks are in use, the scale out process will take a long > time. The problem was/is the Hash-Algo. So I'm asking me how is it if > I've one very big brick (Raid10 20TB on each server) or I've much more > bricks, what's faster and is there any issues? > Is there any experiences ? > > 3) > Failover of a HDD is for a raid controller with HotSpare HDD not a big > deal. Glusterfs will rebuild automatically if a brick fails and there > are no data present, this action will perform a lot of network traffic > between the mirror bricks but it will handle it equal as the raid > controller right ? > > > > Thanks and cheers > Heiko > > > > - -- > Anynines.com > > Avarteq GmbH > B.Sc. Informatik > Heiko Krämer > CIO > Twitter: @anynines > > - ---- > Geschäftsführer: Alexander Faißt, Dipl.-Inf.(FH) Julian Fischer > Handelsregister: AG Saarbrücken HRB 17413, Ust-IdNr.: DE262633168 > Sitz: Saarbrücken > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.14 (GNU/Linux) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSpcMfAAoJELxFogM4ixOF/ncH/3L9DvOWHrF0XBqCgeT6QQ6B > lDwtXiD9xoznht0Zs2S9LA9Z7r2l5/fzMOUSOawEMv6M16Guwq3gQ1lClUi4Iwj0 > GKKtYQ6F4aG4KXHY4dlu1QKT5OaLk8ljCQ47Tc9aAiJMhfC1/IgQXOslFv26utdJ > N9jxiCl2+r/tQvQRw6mA4KAuPYPwOV+hMtkwfrM4UsIYGGbkNPnz1oqmBsfGdSOs > TJh6+lQRD9KYw72q3I9G6ZYlI7ylL9Q7vjTroVKH232pLo4G58NLxyvWvcOB9yK6 > Bpf/gRMxFNKA75eW5EJYeZ6EovwcyCAv7iAm+xNKhzsoZqbBbTOJxS5zKm4YWoY= > =bDly > -----END PGP SIGNATURE----- > > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://supercolony.gluster.org/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://supercolony.gluster.org/mailman/listinfo/gluster-users
