I got 2 of these for my WHS yesterday. I formatted them both ok but only one of them is recognised by WHS. If I put the drive back in my PC I can see it under computer management and it all looks fine. I've even copied data to it and it worked ok, however the drive is not spinning up. Does this mean I have a faulty unit? I've looked on the samsung site for diagnostic utils but nothing there seems to be for the 2TB models.