I'm considering buying a 6 TB Western Digital My Book Studio II to put all my media in one place. Since I have several other drives to use as backup, I'm not planning to do RAID configurations. My question is: does this drive show up as one large 6 TB drive? If so, what happens if one drive dies? Is the other still accessible or is the whole unit dead? Is that the same if you split the drive into two (i.e., make two 3 TB partitions) ... and is it even possible to setup each partition on an individual disk?