Disks "failing" is the problem. If you treat drive state as binary (flawless / eject), you can easily eject too many drives for errors on different 0.000001% of

Disks "failing" is the problem. If you treat drive state as binary (flawless / eject), you can easily eject too many drives for errors on different 0.000001% of data, crashing the array along with the data.