Since the 1TB and 2TB are supported by Apple RAID card, if they were just Black drives, they wouldn't support TLER, which in turn causes issues with RAID arrays.
Are they some Apple/OEM hybrid between the black and RE models? Or does Apple RAID card take into account the desktop drive TLER setting?
Because the 2TB pricing is basically the retail prices of the Western Digital RE (enterprise) drives...
The same goes for the desktop-class HDS722020ALA330, stated above, but from a Hitachi white paper, it says "video editing arrays", so maybe its more raid friendly (the Hitachi drive)