Data Back-Up Algorithm Based on Blockchain with Network Erasure Codes

With the increase in data access on the cloud platform, traditional data back-up algorithms based on Raid5 can no longer meet the requirements of data storage and protection. Three copies and network erasure codes are currently the mainstream distributed data back-up methods. The triple copy technology has simple data synchronization but significant disk redundancy. The network erasure code technology has high fault tolerance and low redundancy, However, the computational power caused by data synchronization is high and there are strict requirements for the computing power of the central node. To address the above issues, we adopt the block chain to achieve distributed secure storage of data. We choose triple copy technology or network erasure code technology based on the frequency of disk usage, select the node with the highest computing power at the current stage as the central node to effectively solve the bottleneck problem of network erasure code and record the data protection method adopted by the disk array through block chain. Fully leveraging the advantages of triple copy technology and network erasure code correction technology, it improves the security and utilization of disk arrays.