Re: [Gluster-devel] Large cluster data pool from 150 non-redundant disks?

[Tejas N. Bhise]

Steffen,

What config you use depends a lot of what kind of data usage you have. You need 
to think if you really need 3 copies of the data.
Please use a recent version ( 3.0.3 ).

Regards,
Tejas.

----- Original Message -----
From: "Steffen Grunewald" <address@hidden>
To: "GlusterFS mailing list" <address@hidden>
Sent: Monday, March 15, 2010 8:20:06 PM GMT +05:30 Chennai, Kolkata, Mumbai, 
New Delhi
Subject: [Gluster-devel] Large cluster data pool from 150 non-redundant disks?

Hi,

After having had a look into GlusterFS quite a while ago, I'm now planning 
to use 2.0.9 to implement a large data pool on our cluster.

I've got 150 nodes, each with a spare disk.
With GlusterFS' self-healing features, I think a triple redundancy would
be more than enough, giving me a "RAID-0" over 50 "RAID-1"s consisting
of 3 disks (bricks) each.
Since a n-fold "RAID-1" (replicate) would mean that a machine writing to
the FS would have to split its bandwidth by n, and the total disk capacity
is divided by n as well, 3 appears to be a good compromise.
Read access would be spread over all disks evenly, and I'm not worried about
that right now (it can only get better, compared to 100+ nodes trying to
access files from a single server).

Is there a catch somewhere that I don't see?

Any suggestions which translators to use (besides posix-locks on the server
side)? What's the difference between "afr" and "replicate"?

Regards,
 Steffen

-- 
Steffen Grunewald * MPI Grav.Phys.(AEI) * Am M�hlenberg 1, D-14476 Potsdam
Cluster Admin * http://pandora.aei.mpg.de/merlin/ * http://www.aei.mpg.de/
* e-mail: steffen.grunewald(*)aei.mpg.de * +49-331-567-{fon:7233,fax:7298}
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