With the evolution of technology, it exists now many ways to store and organize data. This brings along new devices with a large amount of storage capacity. To manipulate such a large amount of capacity, you will need to use the appropriate partition table on the hard drive.
The GPT and MBR are the two popular which are used before choosing the filesystem when you think about keeping your data. As a system administrator, you might want to use either MBR (Master Boot Record) or GPT (GUID Partition Tables) while partitioning, so you must know the difference between the two.