Someone mentioned if I am just copying a Tivo drive, not copy and expand, cloning docks are much faster than copying on a computer. I ordered one this weekend, I'm going to be cloning all my Tivo drives since I've had some "problems" lately. Any tips on these cloning docks? A bit scary for me, I'm used to copying on computer using MFS Tools or whatever, where I can see and verify drive letters etc, feel safe. With a dock it's pretty much push a button I guess, no feedback, better make sure you have the right drives in the right slots I hope the dock I bought is decent, a UNITEK. Also hope it can handle up to 4TB drives, some docks I've bought in the past had limitations on drive size. We shall see, will probably test on a non essential drive first to see how it goes. Oh, the description of the dock says you can copy as long as the destination drive is the same or LARGER than the source. I assume this would not work for a Tivo drive (larger destination drive) or would it? Would it copy to the larger drive but only use the size of the current drive? And then maybe could use some Tivo related software to expand? One final question, even if cloning to the same size drive any problems if the drives are not the same model? Some drives that are supposedly the same size I've noticed small differences in actual reported capacity. If my original 4 TB drive is a hair larger than the 4TB destination drive may not work?