The use of an external hard drive for storing data is popular for a variety of reasons. It makes it possible to save a large volume of business or personal information (documents, songs, movies, pictures, etc.) without taking up the standard space on the PC or laptop.
With many businesses extensively using various types of technology in their respective lines of work, there is a large amount of data which needs storing in order to provide a backup in the case of a crisis. This can be something such as a fire or a flood, or even something much simpler such as a spilt cup of tea on some essential hardware.