[CentOS] Expandable network storage

[Bleier Thomas]

Hi all,

I'm currently thinking about similar configurations, and (also for cost
reasons :-) am also thinking about GNBD with two standard servers as a
"poor man" redundant storage - but I'm wondering if that gives enough
performance for running databases (in my case Oracle) on top of it. The
configuration I'm thinking about would be two current Dell servers with
hardware RAID 10 and connected by a dedicated 1 GBit crossover-cable,
running both the cluster software and Oracle.

Does anyone use this in "real-World" scenarios and has some practical
experience with it?

Best regards,
__
/homas

--
Thomas Bleier, DI
Information Management
Austrian Research Centers GmbH - ARC
HG Wien - FN 115980i - ATU14703506
2444 Seibersdorf, Austria

Mobile: +43 (664) 8251279
E-Mail: thomas.bleier at arcs.ac.at

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Steve Campbell
Sent: Friday, December 14, 2007 8:52 PM
To: centos at centos.org
Subject: [CentOS] Expandable network storage

I want to thank everyone who has provided insight into my thread about 
clustering MySql. I kind of just sat back and watched it develop. I 
learned a lot from it all.

I have been reading all of the documentation on clustering provided by 
Centos/Red Hat, and find I travel in circles. I read one chapter and 
answer a self-imposed question but I end up asking myself another.

What I really want to do is have HA for any service I run (which is 
mostly HTTP, MySQL, FTP, and the common things like that). I want to run

that to redundant storage somewhere that is real easy to expand by just 
adding more hardware (server or disk drive).

I started exploring this by using the Cluster Suite as a base and then 
looked into each aspect of the cluster and invariably got stuck on the 
storage side of this. I see how I can maybe set this up originally, but 
the expansion just doesn't seem to be there. I don't really want to go 
the route of Fibre channels and ISCSI, and would prefer to use common 
hardware (which sort of suggests GNBD).

If anyone cares to offer suggestions, with a pretty clear explanation 
trail (thanks Ken Price for your link to a step-by-step), I would really

like to see it, as I'm not getting anywhere with the documentation. I 
hope to get some hardware to play with shortly, and maybe that'll make 
things clearer.

I'm sure it one of those deals where once I get it done, it'll be so 
obvious. I just need a little kickstart to help me get there.

Thanks,

Steve Campbell

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