I use e self made wood cabinet in the attic where also the PV inverter is located. I used Velcro to strip on the wall (brick wall) stuff like switch firewall etc, only to find those collapsed on the server itself every time. No matter which glue or adhesive i used.

At the end, a strong unbranded Chinese double sided tape was better and still strong after all big western brand failed over time.

Maybe a mix of heat and uneven surface was the culprit, who knows.