Data storage is the integral component of any computer. It is usually called as memory or storage. It acts as a repository for digital data. You can store and access any kind of digital data whenever it’s required. There are two kinds of memory storage system available on computer. They are main memory and secondary or tertiary storage. Main memory is called as RAM. The secondary memory drives are such as hard disk, optical disc and other external data storage devices. Please check below websites for the data storage devices.