[Cassandra Wiki] Update of "Cassandra EC2" by FlipKromer

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The "Cassandra EC2" page has been changed by FlipKromer.
The comment on this change is: Cluster Chef recipes for cassandra on EC2.
http://wiki.apache.org/cassandra/Cassandra%20EC2?action=diff&rev1=1&rev2=2

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- With these simple bash scripts you can easily start up a small Cassandra cluster on EC2 for testing. [[http://github.com/johanoskarsson/cassandra-ec2|Cassandra EC2]]
+ With these simple bash scripts you can easily start up a small Cassandra cluster on EC2 for testing. [[http://github.com/johanoskarsson/cassandra-ec2|Cassandra EC2]] See the readme for instructions on how to use it.
- See the readme for instructions on how to use it.
  
- Worth noting that this is not intended for production use. 
+ Worth noting that this is not intended for production use.
+ 
   * The data is stored locally on the EC2 instance and will disappear when it is terminated.
-  * EC2 io performance is often not great.
+  * EC2 io performance is often not great compared to non-virtualized architectures. You should balance the rest of your hardware allocation accordingly.
  
+ The [[http://github.com/infochimps/cluster_chef|Cluster Chef]] repo has chef scripts and poolparty recipes that can launch and provision a scalable cassandra cluster in the EC2 cloud. It can create either a persistent cluster (using EBS volumes that remain when the instances are decommissioned) or an ephemeral cluster (that uses the local scratch drives), and has optional support for NFS and hadoop. The chef cookbook is based on one by Benjamin Black
+