[mtravis]

Redundancy, quorum protocol, proactive testing, rigorous QA.

And actual 24x7 environments with important data are ludicrously expensive. I expect InfiniSQL to be less expensive since it's based on x86_64, Linux, is open source. But yeah, hardware and environment need to be right.

I'm not sure what I said wrong, but I'm nowhere claiming that split brain (or any failure scenario) can be ruled out entirely in all circumstances--but in practice, split brain is avoided 24x7 for years on end in many different architectures.

It's not magic.

Just like you can't have "enough" storage redundancy. You can have a 100-way mirror of hard drives that will still lose data if you lose 100 disks in less time than somebody replaces one of them.