An update. So, I was going to try the other versions, but then, of course, everything broke again. I couldn't believe it. After working solidly for a few days, it reverted back to what it was doing before. In an attempt to further track down the problem, there was only one other common denominator: StableBit's Drive Scanner. I thought, "This can't possibly be it," but after thinking about what had happened leading up to the days, moments, before everything stopped working (after working fabulously for years, I might add) aside from the update to DrivePool at the time, I also bought and installed Drive Scanner not only on the VM, but on the host machine as well (the VM can't see the SMART status of drives). I thought, it's worth a shot, so I uninstalled it on both the VM and the host. And what do you know, everything is working like normal again. Obviously, I'd like to use the software I paid for, but if this was really the problem the whole time, I ask myself if the dynamic of having WHS 2011 on a Hyper-V is part of the issue as well.
Thoughts? Comments?