Tongxin xuebao (Nov 2015)
Collaboration coding to multi-node repair program under the twin-MDS codes framework in cloud storage systems
Abstract
A multi-node exact repair code scheme,which can repair multiple system nodes or redundant nodes simultaneously,was shown and proved to against the disadvantages of the existing multi-node repair model in cloud storage.The multi-node exact repair code was combined with a twin-MDS codes framework with health cooperative nodes.In this way,repair bandwidth,the number of repair links and the amount of data to be treated in an intermediate node were reduced,while multi-node were repaired.Finally,numerical simulation results show that this scheme has greater improvements.In particular,it reduces the load in an intermediate node.And the advantages was more obvious with the more storage nodes in cloud storage.
