External storage is still very important to a lot of people. Especially people who use external storage for transferring files between 2 different computers or people use it for a work machine and a home machine. 2.5-inch hard drives have been overlooked for a while now, but since solid state drives use that form factor SilverStone has released the DS221 which is a dual bay 2.5-inch external hard drive enclosure that supports RAID. Lets take a look