This charm supports Apache Cassandra 2.0, 2.1, 2.2 & 3.0, and
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Datastax Enterprise 4.7 & 4.8. The default is Apache Cassandra 2.2.
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This charm supports Apache Cassandra 2.0, Apache Cassandra 2.1, and
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Datastax Enterprise 4.8. The default is Apache Cassandra 2.1.
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To use Apache Cassandra 2.0, specify the Apache Cassandra 2.0 archive source
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in the `install_sources` config setting when deploying.
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## Planning
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- Do not attempt to store too much data per node. If you need more space,
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add more nodes. Most workloads work best with a capacity under 1TB
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add more nodes. Most workloads work best with a capacity under 500GB
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per node.
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- You need to keep 50% of your disk space free for Cassandra maintenance
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operations. If you expect your nodes to hold 500GB of data each, you
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will need a 1TB partition. Using non-default compaction such as
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LeveledCompactionStrategy can lower this waste.
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will need a 1TB partition.
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- Much more information can be found in the [Cassandra 2.2 documentation](http://docs.datastax.com/en/cassandra/2.2/cassandra/planning/planPlanningAbout.html)
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- Much more information can be found in the [Cassandra 2.1 documentation](http://www.datastax.com/documentation/cassandra/2.1/cassandra/planning/architecturePlanningAbout_c.html)