You misunderstand the impact of silent RAM errors; when the data is corrupted in RAM then written to disk you have persistent, unrecoverable data corruption. Yo

You misunderstand the impact of silent RAM errors; when the data is corrupted in RAM then written to disk you have persistent, unrecoverable data corruption. Your backups are also corrupt and no common HA mechanism will even detect the failure unless it causes a crash. This sort of memory corruption happens in the real world and is often written off as software bugs.