It's a good analogy. Setting up the three-node cluster is an awful lot more work, and if you don't do it right there's a real chance that you'll end up with lo

It's a good analogy. Setting up the three-node cluster is an awful lot more work, and if you don't do it right there's a real chance that you'll end up with lower real-world reliability than the single node. That said, I can understand why large companies worry about single points of failure. What perplexes me more is that the you-always-need-a-team mindset is filtering down to smaller and smaller organisations.