I finished my long delayed project to build an isolation/cooling enclosure for our Asustor AS6510T NAS, but I am NOT happy.
The motivation was that it's prone to overheat unless the fans are forced to max, the fans are louder than I like, and it sucks A LOT of dust into the enclosure; there is no built-in dust filter. It operates 24/7 with the two fans sucking air through it; it's a dust magnet.
The plan was to build a box to enclose and isolate it, with huge 230mm quiet fans front and back to actively pull the air through it, and a filter on the front.
I got it done finally, but I had to make compromises that roundly displease me, so much so I don't even want to take and share photos.
The supposedly magnetic edged 100-micron filter that I intended to fit over the front fan turned out to be almost completely non-magnetic, so much so that it wouldn't even adhere to the adhesive magnetic strips that I was going to use to keep it attached but removable for cleaning. I was forced to tape it on! Sure, it's still removable with a little effort, but I'll probably end up cheating and just carefully vacuuming it.
Then, when mounting it under the desk and trying to slide the NAS into it, I discovered that I had somehow misjudged something - probably because the desk now prevents the door from opening fully - and the NAS *barely* fits into it. I had to force it past the door. It's okay once it's past the door, but the door isn't removable, especially now with the fan mounted in it (routing of the wire). So now, when I need to remove the NAS from the enclosure, it will be an unexpected struggle to get it free. I can still remove the drive bays easily enough, at least.
And to top it all off, though the fans were whisper silent all through assembly, when I finally mounted it the rear fan started clattering when I powered it up! I hope it will grow out of that... good grief.