What you see is what you get.
I will probably update this description when I have more time/motivation
Jeez, that's a lot of hard drives. Did you consider going with high capacity ones and using less spaces or was having the more drives just the move?
The higher the TB per drive the higher the risk of a secondary failure while rebuilding the raid should a drive fail.
Honestly you shouldn't go higher than 2TB unless you're planning to go with raid 6 or 10 or if you want to Shell out the extra cash for a WD gold, which has a far lower failure rate. I started with raid 10 then changed to 5 after I ran out of room, not smart but whatever... I have a good backup
What's the direction of all your fans? I'm wondering if that's the right way up for your PSU.
Usually, both the intake fan and exhaust point out of the case so the PSU is not adding or being affected by the airflow of the case. If it's sucking hot air from within the case then you're adding heat to the PSU unnecessarily. Now if it's pushing air into the case then you're potentially heating your case with the PSU.
Honestly I have no idea, but the thing runs super cool even while at load so im not worried
I will keep that in mind for the future though