I've been running this thing for a few months now as my NAS and home server (and no, it doesn't dispense HRT). It's been pretty nice except for one thing: the fan noise. That was just horrible and made it impossible to run this thing in any living space, even though it sits in a closet.
Some friendly chap suggested swapping out the fan and a few days ago I finally got round to it. Luckily this device is pretty easy to work with. The black fan is the old one. It was not temperature controlled, which is likely the cause of the problem. The new one is and the difference is striking. Almost total silence. So, success.
Maybe this is useful to others with the same machine. The fan cost about €10 so this didn't blow up the budget. They could have put a decent one in to start with, though. Bonus pic of the PC after I put it back together:
cool