| 摘要 |
The present invention is a system in which a plurality of nodes share storage and have caches corresponding to the storage, wherein the quantity of data to be invalidated in order to maintain consistency is reduced and suppression of reduction in capability is enabled. The plurality of nodes are individually provided with a cache for temporarily holding data related to the storage shared by the plurality of nodes, and a record is made of time information regarding when a process for accessing data is migrated from a first node among the plurality of nodes to another node, and in the first node, after the process has been migrated to the other node, among the data retained in the cache of the first node, data for which the time last accessed by the process on the first node, before the migration of the process to the other node, is older than the time the process was migrated from the first node to the other node, is selectively invalidated. |
