Can you imagine what a file server would be without its data? Or, try thinking about the internet without data? Perhaps these questions may sound a little inappropriate given the fact that both the file server and the internet are intended to provide access to data. However, instantly the answers to these and related questions show how important data is to storage technologies that have been made to store data. So, besides the fact that storage technologies are an objective of the certification exams, their importance is absolute in the world of information and communications technologies (ICT), and that is why these technologies have a whole chapter in this book.