Hitachi, Ltd.

Masashi Yukawa

Takashi Chikusa

Hironori Nakama

Satoru Yamaura

Hiroyuki Kumasawa

Issei Hidaka

A storage control system including an overlap retrieval arrangement for retrieving overlap files, which are stored in at least one storage area of a plurality of storage areas, and which overlap one another, and a storage controlling arrangement for storing data of at least one overlapped part of the retrieved overlap files in a storage area having reliability that is greater than that of the storage area in which the data of this overlapped part is stored. A large number of files are stored in a plurality of storage areas, and the overlap retrieval arrangement retrieves overlap files from among a number of files, which is smaller than the number of stored files.

System and method for controlling the storage of redundant electronic files to increase storage reliability and space efficiency

Proposed are a storage system, data processing method and storage apparatus capable of performing stable data I/O processing. Each of the storage apparatuses configured in the storage group stores group configuration information containing priority information given to each storage apparatus, and the storage apparatus with the highest priority becomes a master and performs virtualization processing and data I/O processing, and another storage apparatus belonging to this storage group performs internal processing of the storage group.

Growing community of inventors

Odawara, Japan

Masashi Yukawa