大雑把な意訳、訳しにくい箇所は英文のまま転載します。 http://basho.com/why-your-riak-cluster-should-have-at-least-five-nodes/ Overview - TODO:後で読むかも April 26, 2012 Here at Basho we want to make sure that your Riak implementations are set up from the beginning to succeed. While you can use the Riak Fast Track to quickly set up a 3-node dev/test environment, we recommend that all production deployments use a minimum of 5 node