1: Also “Redundant Array of Independent Disks”. 2: For those who care: a PC running Linux Mint, though it would work just as well running Windows. It also does run Windows – in a virtual machine – for some other purposes. Ironically, the NAS was also running a variant of Linux internally. 3: I realize that’s a risky statement. What’s obvious to me may not be obvious to the less experienced. But registry settings shouldn’t be the first thing you think of when a key on your keyboard stops working either. 🙂 4: The risk was that something else could die while the NAS was broken. Then I could have been in a world of hurt.