I did not even have a raid, I was too cheap to allocate drives to parity. So I had two of these and a couple of other drives in a JBOD array fused together into a logical filesystem using something I can't remember now.

Maybe my approach was better in hindsight: I only lost the data on those two drives and everything else was left untouched. I guess if you know the drives are dodgy, put them in a JBOD array as it will limit the blast radius in case of failure.