When you write something to the NAS, it'll land in memory before it's written out to the RAID. If you get an undetected bitflip in that memory before it's writ

When you write something to the NAS, it'll land in memory before it's written out to the RAID. If you get an undetected bitflip in that memory before it's written out, it'll happily replicate that error across your RAID. Worse could happen if a RAM error corrupted the in-memory copy of filesystem metadata (like an extent map) - subsequent writes that rely on that metadata could then cause gnarly corruption.