I am starting to seriously consider taking a thin 2.5" or M.2 form factor machine and running SATA cables out to an external drive cage though....
Do you have to use that particular wall enclosure thing? A 1U chassis at 1.7” of height fits 4 drives (and a 2U at ~3.45” fits 12), and something like a QNAP is low-enough power to not need to worry about cooling too much. If you’re willing to DIY it would not be hard at all to rig up a mounting mechanism to a stud, and then it’s just a matter of designing some kind of nice-looking cover panel (wood? glass in a laser-cut metal door? lots of possibilities).
I guess my main question is, what/who is this for? I can’t picture any environment that you have literally 0 available space to put a NAS other than inside a wall. A 2-bay synology/qnap/etc is small enough to sit underneath a router/AP combo for instance.
It's already there in the wall. All the Cat5e cabling in the house terminates there, so all the network equipment lives in there, which makes me kind of want to also put the NAS in there.
It adds enough depth to fit plenty of regular-sized components.
Or it might have been that the lovely, lovely human beings who installed this thing somehow screwed it up so that no extender would ever fit. They had a habit of doing that. Unfortunately, the best way to summarize the electrical in this new-construction house is that Mistakes Were Made™.