It sounds like it's working as intended. Redundancy doesn't help you with reliability once your system is in a degraded state. Running a server with a known bad

It sounds like it's working as intended. Redundancy doesn't help you with reliability once your system is in a degraded state. Running a server with a known bad ram stick is like driving a car on run-flat tires. It will probably get you where you need to go, but you really should be driving to a tire shop.