Another worth while consideration is heat generation.

Indeed. I put my rack in the closet. Cut in a 500 cfm inline exhaust fan to the attic. Then I wired it to a thermostat. That way it’s not constantly sucking 500 cfm of AC into the attic in the summer and heat in the winter. Then sound bat and insulation to keep the drone of the fans to zero with the door closed. Seems to work nicely. But yeah, when you step up to enterprise equipment and legacy at that, associated cost are worth considering.