Using two machines running ZK will actually decrease your reliability
>> compared to using a single machine. Consider using one machine or three.
> Not meaning to pull the thread off-topic, but I don't understand why this
> should be the case. Can you elaborate?
With majority-based quorums, a 2 node ensemble will fail if either machine
fails. This is the same as a 1 node ensemble - if one machine fails, the
But with the 2 nodes, you have (roughly) double the probability of
experiencing a single failure, with the same failure profile.