A Sufficient Way of Mass Data Storage for Cloud Computing Based on Hashing Strategy

With the rapid development of information technology and Internet, the mass data storage of Internet is an urgent problem to be solved. Due to the insufficiency of single NameNode, a new improved data storage method based on HDFS was proposed. In this method, consistent hashing strategy was adopted for metadata allocation; NameNode clusters were built and BLT was used for management of NameNode mapping; log copy was used to achieve data security and consistency. Simulation results showed that the method can effectively improve read and write performance under ensuring metadata´s security, consistency and fault tolerance.