If you’ve been following my DIY JBOD build, you’ll remember that I’m using server PSUs with mining breakout boards to power almost 100 disks so far.
Here’s a public service announcement if you are doing the same: CHECK THE PORTS ON THE BREAKOUT BOARD
In the picture below, you’ll see that one of the ports was soldered to the board BACKWARDS (2nd column from left, 2nd row, to the left of the voltage readout). Of all 12 ports to choose from, guess which one this guy chose to plug-in. Yep that’s right - I let all the magic smoke out of two of my hard drives. I got lucky that those two took the hit - there were 8 other drives plugged in to that cable but somehow they all survived.
Moral of the story: double-check power ports and don’t assume they are soldered correctly (especially cheaply made ones)!