36 DC fans @ 25W each = 900W
so less then an amp
36 fans @ 72 CFM ~ 2600 CFM
It's hard to move that much air with that much power.
Also, with 1 or 2 fans I lose the redundancy and add a single point of failure
I paid ~ $1.50 per fan, so if one fails it's easy to replace.
Nice tower case, is it a custom cabinet or did you modify something for servers to work with the S7s?
The rack is by BlackBox and is meant for switch equipment.
The front door was a solid piece of plexi, witch offers no ventilation.
I had to cut the bottom half of the plexi to fit the filter and fans.
Inside I had to put in shelves to sit the miners on.