[Wowfunhappy]

Those are not instances of error checking causing data corruption. As I said, "I don't understand how error checking could ever cause data corruption."

Error checking will only ever help you, not hurt you. It doesn’t matter how bad you memory or disk or raid controller is. Error checking won't necessarily save you from those things, but it can in some cases, and it’ll never make things worse.

[Xamayon]

But they are though, the parity data calcs being corrupted in that first example caused data corruption during a scheduled array check while the system was under unusually heavy load. Error checking is good, and when things are working right it can only help. That is true, but it can't always be counted on if the hardware, software, etc is untrustworthy for whatever reason.

[Wowfunhappy]

Okay, well I am totally and utterly confused as to how that could ever be possible, regardless of the hardware. You're confident that if not for the data validation the problem wouldn't have occurred?