[Gluster-users] Gluster infrastructure question

[Andrew Lau]

Hi Ben,

For glusterfs would you recommend the enterprise-storage
or throughput-performance tuned profile?

Thanks,
Andrew


On Tue, Dec 10, 2013 at 6:31 AM, Ben Turner <bturner at redhat.com> wrote:

> ----- Original Message -----
> > From: "Ben Turner" <bturner at redhat.com>
> > To: "Heiko Krämer" <hkraemer at anynines.de>
> > Cc: "gluster-users at gluster.org List" <gluster-users at gluster.org>
> > Sent: Monday, December 9, 2013 2:26:45 PM
> > Subject: Re: [Gluster-users] Gluster infrastructure question
> >
> > ----- Original Message -----
> > > From: "Heiko Krämer" <hkraemer at anynines.de>
> > > To: "gluster-users at gluster.org List" <gluster-users at gluster.org>
> > > Sent: Monday, December 9, 2013 8:18:28 AM
> > > Subject: [Gluster-users] 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
>
> That one was from 2012, here is the latest:
>
>
> http://rhsummit.files.wordpress.com/2013/07/england_th_0450_rhs_perf_practices-4_neependra.pdf
>
> -b
>
> > 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
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