Hitachi Software Engineering Company, Ltd.

Hitachi, Ltd.

Keiichiro Hirata

Akira Kojima

Retrying processing in access of data having different properties required such as reliability and real time property of the access is optimized. In a magnetic disk apparatus connected to a host computerthrough a connection interface and including a magnetic disk controller and a magnetic disk, the magnetic disk controller includes a retrying table in which an area address, an area size, a retrying limit value and the like are set for each of a plurality of storage areas A, B and the like of the magnetic disk and the retrying limit value set in the retrying table from the host computer is used to optimize the retrying processing for data having different reliability or real time property of access such as management data and image/audio data stored in each of the storage areas A, B and the like individually.

Storage apparatus and control method thereof

Retrying processing in access of data having different properties required such as reliability and real time property of the access is optimized. In a magnetic disk apparatus connected to a host computer through a connection interface and including a magnetic disk controller and a magnetic disk, the magnetic disk controller includes a retrying table in which an area address, an area size, a retrying limit value and the like are set for each of a plurality of storage areas A, B and the like of the magnetic disk and the retrying limit value set in the retrying table from the host computer is used to optimize the retrying processing for data having different reliability or real time property of access such as management data and image/audio data stored in each of the storage areas A, B and the like individually.

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Odawara, Japan

Keiichiro Hirata