Indeed, it hasn't happened to me but I remember reading about someone who discovered the hard way that their firmware fell back to storing boot variables in a f

Indeed, it hasn't happened to me but I remember reading about someone who discovered the hard way that their firmware fell back to storing boot variables in a file on the ESP for some reason. It's the sort of thing you only notice once you're staring at an error message, wondering why your ESP is corrupted. It's hardware RAID or nothing, at least for the ESP for me!