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From "P. Taylor Goetz" <ptgo...@gmail.com>
Subject Re: Cassandra with SAN
Date Thu, 21 Feb 2013 23:56:29 GMT
Cassandra is designed to write and read data in a way that is optimized for physical spinning
disks.

Running C* on a SAN introduces a layer of abstraction that, at best negates those optimizations,
and at worst introduces additional overhead.

Sent from my iPhone

On Feb 21, 2013, at 6:42 PM, Kanwar Sangha <kanwar@mavenir.com> wrote:

> Ok. What would be the drawbacks J
>  
> From: Michael Kjellman [mailto:mkjellman@barracuda.com] 
> Sent: 21 February 2013 17:12
> To: user@cassandra.apache.org
> Subject: Re: Cassandra with SAN
>  
> No, this is a really really bad idea and C* was not designed for this, in fact, it was
designed so you don't need to have a large expensive SAN.
>  
> Don't be tempted by the shiny expensive SAN. :)
>  
> If money is no object instead throw SSD's in your nodes and run 10G between racks
>  
> From: Kanwar Sangha <kanwar@mavenir.com>
> Reply-To: "user@cassandra.apache.org" <user@cassandra.apache.org>
> Date: Thursday, February 21, 2013 2:56 PM
> To: "user@cassandra.apache.org" <user@cassandra.apache.org>
> Subject: Cassandra with SAN
>  
> Hi – Is it a good idea to use Cassandra with SAN ?  Say a SAN which provides me 8 Petabytes
of storage. Would I not be I/O bound irrespective of the no of Cassandra machines and scaling
by adding
> machines won’t help ?
>  
> Thanks
> Kanwar
>  
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