| 摘要 |
PROBLEM TO BE SOLVED: To improve service availability of cloud storage using a logical network in an environment where a physical network fault may occur.SOLUTION: A network construction method includes a neighboring node selection step and a logical network construction step in order. In the neighboring node selection step, in the case where there is a novel node to take part in the logical network, a group including the novel node and an SN allocated to a physical node with least hops on the physical network among a plurality of present SNs is determined as a group to which the novel node belongs, and an LN included in the group to which the novel node belongs is selected as a neighboring node to the novel node. In the logical network constitution step, a ring structure is formed by making the neighboring node selected in the neighboring node selection step neighboring to the novel node, and the novel node is connected to the SN of the group to which the novel node belongs. |
