Internet data management system and reading and writing method thereof

The invention discloses an Internet data management system which comprises an access management module, an access adaption module and an access resource module. The access management module is used for sending a file access request to the access adaption module, writing files to be written into one or more data units of the access resource module, reading the files from the data units of the access resource module and combining the files into a file to be read. The access adaption module is in charge of managing namespace of the whole data management system, distributing the data units of the access resource module and the storage positions in the data units for the files to be written and searching the data units of the access resource module and the storage positions in the data units for the files to be written. The access resource module comprises the data units which are identical in size. The invention further discloses a reading and writing method of the Internet data management system. According to the system and method, management efficiency of mass data can be improved and the system and method are particularly suitable for managing unstructured data.