I don’t know if you bought the drive(s) yet, Sol, but there is one thing that could possibly be a deal breaker for you: this drive - 8TB My Book - is noisy. Real noisy. You can hear it very clearly from 3 m distance, and it can be annoying when you watch something in the middle of the night at low volume.
For me personally it isn’t something that would be a deal breaker, but I don’t know your setup and your sitting distance from the player/drive.
The sounds are usual HDD working sounds, nothing ominous (like the dreaded “clicking” sounds), but they are much louder than any other disk that I ever owned. I read customer reviews on Amazon and everybody mentions that. It seems that it has to do with some “different method” WD used on this model, although I have no idea what kind of “difference” they are talking about.
You mentioned that you’re considering buying two of these, so I think this info might be valuable to you.
Unfortunately, I can’t think of any means of describing more precisely the level of noise for you, to help you making the decision. I don’t know where you live and whether there are stores next to you that would allow you to hear the drive when in use, before buying it.
As I said, it’s not that much of a big deal for me, but if it so happened that I needed two of these, and if I were to sit closer to them than I do now, that might be a problem.