After replacing Drive X due to a hardware failure the Drive and Medium Changer appear offline on NV.
The following items have been confirmed:
A. Drives, Medium Changer and Storage Controller show up properly on Device Manager.
B. Drives where added back matching the Drive serial with the bay position as seen from the Library panel, in order to ensure they’re in the correct order.
C. Drives and Medium Changer, show up Online on the Library without any warnings or errors.