Management device, management manner and manager administrative program

摘要

The management node (N1) the node choice section (m41), the backup node of the management node is chosen the node of overlay network (N2 - N4) from, the management range to which the node belongs, data capacity, and operational time as a collimating mark. The data duplication section (m42), it duplicates the information of management in the backup node, changes and the treatment section (m43), it changes the backup node to the management node when the management node halts. Because of this, the load in managing the network system is distributed, to improve it is possible scalability and reliability.