The big problem with solid state drives, even with prices dropping on an almost daily basis, is that getting the storage capacity you really need is often prohibitively expensive. Western Digital are looking to solve the problem with the WD Black2 Dual Drive by pairing a 120GB SSD with a 1TB HDD in a single 2.5-inch package. Basically it looks like any other 120GB SSD, but comes with another 1,000GB of data storage behind it. It's an interesting upgrade option for any system with limited storage options, like a laptop or a small form-factor PC. It means you don’t have to make a compromise between quicker performance with an SSD and the increased capacity, but slower speed, of a standard hard drive.