Object Storage Service OBS uses the distributed data fault tolerance technology Erasure code (EC) to...

The data will be redundantly shared. and the sharded data will be stored on different servers, and the number of faults is less than the number of redundant, which will not affect the normal operation of the service

Compared with the 3-copy mechanism, the EC algorithm can greatly improve storage utilization

EC is mainly to improve the utilization rate, when the hard disk fails, the data reconstruction speed is similar to the traditional RAID

EC's M+N redundancy mode is the resealing answer to RAID 5 technology