Real stumper here. We have a Poweredge 2900 and are using a PERC 5/i RAID controller. BIOS, backplane, baseboard controller and RAID controller are all on current firmware now.
On boot, the machine declares that the Flex Bay power cable is missing or improperly configured.
Main problem with that is we don't have a Flex Bay. The SAS cables are going straight from the controller to the backplane, and we have no intention of adding a Flex Bay to this machine.
The 8 bay hotswap cage is working fine, the drives in it are doing great on the RAID we set up, and the machine is otherwise 100% functional. Additionally, we've set up another 2900 side by side with this one with identical physical configuration, and it does not experience the same issue. We've verified the SAS cables against known-good ones, and the issue comes up on boot regardless.
This wouldn't be all that big a deal other than the fact that if we ever would need to reboot the 2900 remotely, someone would need to be physically on-hand to get it past the error and back into the OS. Not really ideal for a machine we want to sit in our NOC without much physical intervention.
We've been looking everywhere, but can't really find a way to disable the Flex Bay in the BIOS or the RAID controller.
Anyone have insight they could offer on this issue?