I have a 6 TB WD Thunderbolt Duo, which is set to a RAID 1 mirror configuration.
Every time I reboot my Mac, the RAID becomes degraded and the auto-rebuild process starts. Needless to say, I feel this is putting a lot of unnecessary strain on the drives apart from being a general annoyance.
I found what appears to be an excellent WD support article on this exact issue here:
Unfortunately, when I try to execute the last command to change the RAID timeout from 30 to 60, I get the error message “Error updating RAID: Couldn’t modify RAID (-69848).”
Does anyone know how to fix this error so that the command is executed?
Thank you in advance.