In RAID 0 if one of the disks dies you'll lose all the data (including the one on the second disk), due to the way RAID 0 distributes the data between disks. If you go JBOD it's "every disk for himself" sort of speak. This is something people often overlook, but with RAID 0 your chances of loosing the data is twice as high.
From my limited research, you cannot use this drive in a JBOD configuration because of the controller. Though I saw one post where someone stated they were able to reformat the drives with Disk Utility on OSX, and making sure they did NOT install the WD software, almost every other comment said JBOD wouldn't work. I wanted to do the same thing but decided it wasn't worth experimenting. I'm happy (one week so far) using it as RAID 1 -- also tried RAID 0.