Only full size racks. You don’t need to buy a full size rack. You can get very small racks these days that are smaller than a little chest cooler. And why are you under the impression that you have to mount it on the wall?
Correct. If space is such a big problem for you that it’s unconscionable to use a 4U mini rack (which again, like what the fuck), then mounting hardware on the wall is a completely valid option. It’ll take up zero floor space.
Only full size racks. You don’t need to buy a full size rack. You can get very small racks these days that are smaller than a little chest cooler. And why are you under the impression that you have to mount it on the wall?
You shared a picture of a computer mounted on a wall.
Correct. If space is such a big problem for you that it’s unconscionable to use a 4U mini rack (which again, like what the fuck), then mounting hardware on the wall is a completely valid option. It’ll take up zero floor space.