I recently moved my Dell C2100 and when I went to power it up, none of the drives came on (no LED activity at all). After some diagnosing, I noticed one of the trays (no drive) had a solid red LED. I removed the tray and immediately all the drives activated and worked fine.
I put the tray back in and the drives went out again. I tried a different tray and the same result. If there's no drive in the tray, what could be causing the issue?
Side note: To me this seems like a short on the backplane, but I'm not sure.