I put my server (Supermicro 847 case) on a dolly and rolled it under my staircase between the 1st and 2nd floor temporarily (an unfinished space) when I was redo-ing my garage. For whatever reason, that space attracts quite a bit of dust. I wound up sticking a room air filter in the space to help keep the server insides clean. Try rigging up some sort of air filtration system. Someone above mentioned dust falls thru the cracks in the steps. Maybe that was my issue too. Perhaps sheetrocking the space may help, sealing off any airflow except from the front of the space and then make a door on the front that can hold HVAC style filters. Then put an exhaust fan near the top blowing the hot air out?
I use the AC Infinity stuff for my A/V rack. Works well and very quiet. Looks sharp too.
I use the AC Infinity stuff for my A/V rack. Works well and very quiet. Looks sharp too.