HI guys . I am happy to report that I got the TT dock and the WD red 4TB drive and all is working well. One thing I didn't realize and for any one else ordering it, is that the dock comes with a eSATA cable. I bought one that I currently don't need but will keep it because who knows I might upgrade my HR20 as well. Special thanks to Rich for all of your input.
Huh, forgot about that. On that subject, be careful with the eSATA cable. Plug it in and just leave it alone. I'm sure they're better than they were years ago, but I'd still leave it alone as much as possible. I don't recall ever having a bad one, had some suspicions, but I don't recall ever throwing one out. Needless to say, I've got quite a few of them.