> Not sure what the intended purpose is, but we've mostly used it as an 
> emergency disk-capacity-increase option

Thats what I've used it for.  

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com

On 28 Jun 2011, at 15:55, Dan Kuebrich wrote:

> Not sure what the intended purpose is, but we've mostly used it as an 
> emergency disk-capacity-increase option.  It's not as good as raid because 
> each disk size is counted individually (a compacted sstable can only be on 
> one disk) so compaction size limits aren't expanded as one might expect.
> 
> On Mon, Jun 27, 2011 at 11:30 PM, mcasandra <mohitanch...@gmail.com> wrote:
> I thought there is an option to give multiple data dirs in cassandra.yaml.
> What's the purpose of that?
> 
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