Noise is the other issue. I found a nice fanless switch, but my server was noisy for years until I got serious about fans and switched everything to 4-pin Noctuas with PWM set at 50%.
I made my server near silent (it's basically just a desktop computer) but now the biggest noise comes from the disks. I can't stand the noise. Not sure how to make disks quiet though.
Get some SSDs
Play with the acoustic settings or switch to NAS-grade drives (WD Red)