I joined to mine Burst coin from last December. It's quite interesting as it consumes not much power.
https://i.imgur.com/xVBpNRM.jpg
https://i.imgur.com/4ns6Ldj.jpg
https://i.imgur.com/xVBpNRM.jpg
https://i.imgur.com/4ns6Ldj.jpg
I dont even know that you also mine Burst Coin, I just think you mine ETH haha. How much Tb of your farm, and I wonder why you use all HDD not external hard drive which is typically cheaper and consumes less power than HDD. Btw, your setup is too cool. I have only 80Tb but I just make it like this haha.
Buy some usb fans for those HDD's like this one;
https://www.arctic.ac/eu_en/arctic-breeze-mobile.html
I own 3 of those those HDD's and they get pretty hot after some time. Probably not dangerous but keeping them cool might extend their lifespan.
One fan can cool 3 of your HDD's. Those seagates have 2 usb ports on the front panel. You can dial your fan there.
This is my mini rig:
Waiting for the new 20xx GPU's and more money, so I can add more HDD's
