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[cassandra] One cassandra per data disk
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  • One cassandra instance per data disk per server
  • One disk per zfs pool
  • SSD shared between the cassandra instances
  • All the cassandra instances of a server must be consider in the same rack to avoid to have all the replicas in the same server
  • 5 nodes at the beginning of the tests
  • add the last node during the test

Additional test scenarios:

  • Loss of a cassandra instance in a server
  • Loss of several instances in different servers
  • Loss of a complete server