Today, with the rapid development o

Today, with the rapid development of information technology, everyone can obtain a large amount of information data through the Internet, from a small file of a few bits to a file of several gigabytes. The simplicity and availability of a large amount of information has made the storage of information a huge problem. Large-capacity mobile hard drives have emerged, but their inconvenient portability has led to a low usage rate. The coverage and portability of the Internet make people store large-capacity data somewhere in the network, and download it through the network when needed. This method simultaneously solves the problems of large-capacity data storage and portability.