Ouch ouch ouch...
I have this box. I also posted a video on Youtube how to open it.
http://www.youtube.com/watch?v=yLJoYb9-6R0The drives inside are Seagate 7200.11 series.
By default, this box is configured as RAID 0. If any one drive fails, you lose all data.
It's not just expensive, but very expensive. These drives are new technology that represents genuine pain and for which we do not yet have special tools readily available, although some gurus have figured it out. Additionally, the RAID 0 needs to be reassembled. This requires about 4 TB of temporary storage just to get the work done. Figure on a $2000+ bill.