File Level Backup System Based on Content-addressed Storage

For problems of current backup system,such as large amount of duplicate data,too many data transmit over the network,and low data security,this paper presents a new file level backup system,which is built on the open source Bacula backup system.It uses the disk as a storage medium,based on content-based addresses to store data,and carries out de-duplication technology to save storage space.Performance test results show that the system can effectively ease the pressure on storage and network transmission,while improving data security.