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AssigneeHitachi, Ltd.
InventorsShugo OGAWA, Yoshihiro YOSHII, Ryosuke TATSUMI, Tomohiro YOSHIHARA, Yusuke NONAKA, Hiroshi MIKI
Estimating the term…
Performance deterioration of a storage system is prevented. A storage controller includes one or more processors, and one or more memories configured to store one or more programs to be executed by the one or more processors. The one or more processors are configured to execute conversion of converting metadata before conversion for controlling the storage system into metadata after conversion in a format corresponding to a new controller newly installed in the storage system, execute control of switching an access destination between the metadata before conversion and the metadata after conversion according to an access control code during the conversion, and access the metadata before conversion without using the access control code before start of the conversion.
A storage system, comprising:
A method for controlling a storage system, the storage system including a controller, the controller including one or more processors and one or more memories configured to store one or more programs to be executed by the one or more processors, the control method, with the one or more processors, comprising:
Dependencies are inferred from the claim text.