This makes me thing what is power on and power off. I assume when I switch the power off by power button (soft-off) it is "power off", even the board is still powered (green LED lights), and I can for example remove the drive in the rack. To completely cut the power I would need to unplug the power cord (there is no switch on PS), which I am not sure is the way it was meant to be done.
Am I right?
Anyway, I always plug/unplug drives when system was "soft-off", in that state there should be no power on +5V and +12V rails.
What confuses me even more is, I have tried the deaf drive yesterday several times with no luck. Today I brought it to the company and put into my work machine and it worked right away.
Seems, that the instant I started posting on SR, my drives started challenging me .