>  I assume my only options are to create another cluster or to create another 
> keyspace using LocalStrategy strategy?
You do need another key space, but you can still use the 
NetworkTopologyStrategy. 
Just set the strategy options to be dc1: 2 and dc2: 0. (check the docs for CLI 
and CQL for exact strategy options). 

> What's the difference between LocalStrategy and SimpleStrategy?
LocalStrategy is used by System keyspaces and secondary indexes to store data 
on a local node only. You do not want that. 

IMHO better to use NetworkTopologyStrategy as above than simple. 

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 25/02/2013, at 10:41 AM, Keith Wright <kwri...@nanigans.com> wrote:

> Hi all,
> 
>    I have a cluster with 2 data centers with an RF 2 keyspace using network 
> topology on 1.1.10.  I would like to configure it such that some of the data 
> is not cross data center replicated but is replicated between the nodes of 
> the local data center.  I assume my only options are to create another 
> cluster or to create another keyspace using LocalStrategy strategy?  What's 
> the difference between LocalStrategy and SimpleStrategy?
> 
> Thanks!

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