Auto Rebuild not working

New EX2, current firmware (1.05.30), RAID 1, WD Red 4TB NAS drives. I have Auto Rebuild set to On but when I pull out and replace a drive it doesn’t rebuild, just sits there with the orange light flashing to indicate that it’s degraded.

Hi there and welcome to the WD community.

On this case i recommend contacting support for further assistance:

http://support.wdc.com/country/index.asp?lang=en%22

I have the same issue. What was the resolution? Why doesn’t auto-rebuild actually work? Why doesn’t the device provide a better explanation of what it is or isn’t doing when you replace a disk?