Man, people just looooove to link 5 year old blogs about fault tolerance, meanwhile that isn't even relevant anymore, and honestly, it wasn't relevant at the ti

Man, people just looooove to link 5 year old blogs about fault tolerance, meanwhile that isn't even relevant anymore, and honestly, it wasn't relevant at the time either, because changing the write concern is trivial. The real nugget of truth here is this; don't use tools that you don't understand... PERIOD. Further, there are a plethora of alternative engines for Mongo that do have fault tolerance in mind.