I have to reuse old rack and servers.
The server is 74 cm deep and the rack around 65 cm.
With a few tricks I'd be able to mount everything I need if I leave back and front doors opened.
I thought about more dust, more humidity, all the danger of having an opened door h24 that cannot be closed (a person closing and breaking it), physical access to servers granted to anyone able enter the room.
I am generally against working this way but I would like to hear your thoughts and get a complete list of technical reasons that describe what is bad about the decision to mount anyway.