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From Dave Brosius <dbros...@mebigfatguy.com>
Subject Re: 200TB in Cassandra ?
Date Thu, 19 Apr 2012 12:55:38 GMT
I think your math is 'relatively' correct. It would seem to me you 
should focus on how you can reduce the amount of storage you are using 
per item, if at all possible, if that node count is prohibitive.

On 04/19/2012 07:12 AM, Franc Carter wrote:
>
> Hi,
>
> One of the projects I am working on is going to need to store about 
> 200TB of data - generally in manageable binary chunks. However, after 
> doing some rough calculations based on rules of thumb I have seen for 
> how much storage should be on each node I'm worried.
>
>   200TB with RF=3 is 600TB = 600,000GB
>   Which is 1000 nodes at 600GB per node
>
> I'm hoping I've missed something as 1000 nodes is not viable for us.
>
> cheers
>
> -- 
>
> *Franc Carter* |Systems architect|Sirca Ltd
> <mailto:marc.zianideferranti@sirca.org.au>
>
> franc.carter@sirca.org.au <mailto:franc.carter@sirca.org.au>| 
> www.sirca.org.au <http://www.sirca.org.au/>
>
> Tel: +61 2 9236 9118
>
> Level 9, 80 Clarence St, Sydney NSW 2000
>
> PO Box H58, Australia Square, Sydney NSW 1215
>
>


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