I have a Inter-Tech 4U-4724 chassis with 24 HDD bays. This comes pre-assembled with a backplane where each row (4 drives) are connected to the same power/data cable. The controller card is an LSI 9305-24i, with 6 SFF 8643 -> SFF 8087 cables. In the front of the chassis I can see that the drive is actually getting power, but does not appear in Unraid GUI at all. I have tested with several other drives, but have so far ignored the problem as I've had spare bays. Now the bays are all full except for the last one which is simply not working. I would assume the only potential culprit would be the backplane? If it was the power, controller card or cable I would assume the other bays in the same row would have similar issues? Any tips of what other things I potentially could check would be appreciated.