GSpeed Studio R 12 TB used with imac 27". When I disconnect thunderbolt from computer, the drive shuts down, but it sounds like something is still running all the time. Is this a fan? Is one of the drives spinning? It is not powered down, plugged in AC, but disconnected by thunderbolt cable from computer and still makes a very quiet noise. What is this?
Also I need to clean this thing out. There is dust on all the vents. Do I remove the drives and vacuum out or just vacuum the dust out of the vents. It keeps overheating and I think dust is the culprit.