Thanks to modern technology and increased computing power, external data storage devices are much less cumbersome and unwieldy than only a few short years ago. In fact, many such devices are now stylish and pocket-sized; allowing for easy transport and storage. It is for this reason that an external hard drive has become the best option for secure data storage for millions of individuals around the world. Still, it may be difficult to select the correct storage device that suits a specific requirement. Therefore, let us take a brief look at some of the most important variables that need to be considered.