Western Digital has just released the Black2 -- 2.5-inch hard drive that combines a 1-terabyte hard disk drive and 120-gigabyte solid-state drive. Curiously, though, the WD Black-squared isn't a hybrid drive -- it's two separate drives in a single, over-priced package, sharing the same SATA interface. WD seems to be using the phrase "dual drive" but "2-in-1" and "combi-drive" are both pretty accurate. Due to this unique, SSD-riding-shotgun, non-hybrid setup, it's not immediately clear how WD wants you to use the Black2 -- nor how big the performance gains actually are. For $300, though, we have high expectations.