DATA STORAGE AND DYNAMIC MIGRATION METHOD, AND DATA STORAGE AND DYNAMIC MIGRATION DEVICE

摘要

To provide a dynamic migration method which increases storage efficiency of a cloud storage system.SOLUTION: After a data storage request is transmitted from a client terminal, a data node storing at least one data in order of size of dispatch evaluation value is selected, and a relative load value of the data node and an average load value of all data nodes are obtained. When the relative load value of the data node is average load value or larger, the data node is established as a heavy-load node and added to a heavy-load node; otherwise, the data node is established as a light-load node and added to a light-load node set. Data of each heavy-load node of the heavy-load node set is migrated to each light-load node of the light-load node set.SELECTED DRAWING: Figure 1