Excuse, droark, but this is not true at all!
Technically? Yeah, I suppose you could toss any old drive into a USB2 enclosure, let it sit for a couple of days, and eventually have everything properly connected. As goatpig said, a lot of assumptions are being made.
- Ideal conditions. Hard drives grind to a halt when they're doing non-sequential reads and writes over different files. (Even SSDs kinda do it too, although it's nowhere near as bad.)
- Core's fighting for drive access too and has its own HD issues, not to mention CPU usage. (It's hard to read or write when the CPU is getting chewed up!) Other programs and the OS may be accessing the drive too.
- Is it possible there are really subtle bugs in Armory that make things worse for hard drives? Possibly. Anybody want to offer up some patches? goatpig & I are busy with various features we're working to get off the ground while balancing other factors in our lives. For better or worse, because SSDs are a reasonable workaround, we're not in a hurry to troubleshoot this one.
That said, your directions for the OP are good. Thanks.