DATA SYNCHRONIZATION METHOD, DATA SYNCHRONIZATION SYSTEM AND STORAGE MEDIUM FOR MULTILAYER ASSOCIATION STORAGE ARCHITECTURE

摘要

A data synchronization method for a multilayer association storage architecture comprises: a master module receiving a request of an external write operation, writing data in a write buffer of the master module, and recording a digital sequence according to the write operation on the write buffer of the master module; when the data amount of the write buffer of the master module reaches a threshold, refreshing and outputting the data from the write buffer to a solid-state disk file; the master module recording a digital sequence for the refreshing and outputting operation; the master module respectively synchronizing the write operation and the refreshing and outputting operation to a slave module according to the orders of digits in different digital sequences; and the slave module receiving the synchronized write operation, and correspondingly synchronizing the data of the master module to corresponding locations of a local write buffer and a solid-state disk file, respectively. The present invention decouples the relationship between a write buffer and a solid-state disk file, which respectively synchronize their own data, and can ensure the accuracy and consistency of the data. Also provided are a data synchronization system and storage medium for a multilayer association storage architecture.