Research of Data Reliability Technology Based on Erasure Code Redundancy Technology in Cloud Storage

In the application of cloud storage, the most important technique is to ensure the safety and reliability of data. Therefore, the safety mechanism of user data reliability must be solved for the cloud storage development. In this paper, the erasure code redundancy technology is introduced into the cloud storage. The user data is divided into several data blocks which are stored in different storage nodes, based on data fragmentation method of erasure code. In Byzantine environment, a subset of different m blocks may decode the different data blocks. So, the fragmentation verification technique is so important that it is the research focus of the erasure code.