[tempest_]

Scaling vertically does not mean you cant have fault tolerance and I feel like your comment just makes my point.

[andriy_koval]

My point is that in PG, fault tolerance requires untrivial investments.

If you pick horizontally scalable DB (foundationdb, cocroachdb, scylladb, tidb, etc) they all give you fault tolerance for free without much involvement from your side, because it is part of the nature of those DBs.