HOT DATA MANAGEMENT BASED ON HIT COUNTER FROM DATA SERVERS IN PARALLELISM

摘要

PURPOSE: A hot data management method based on access number of times collected form data servers in dispersion are provide to perform monitoring and resolving hot data through effective dispersion of a load even if request of many users is generated at predetermined time in asymmetry storage system, thereby providing stable data service. CONSTITUTION: An access number about data which each data server of an asymmetric storage system stores is monitored. Each data server maintains access number information per data in recent state. Each data server transmits the access number information in predetermined cycle to a meta data server. According to crystallization of the metadata server, each data server performs deletion of a duplicate or copy(S971).