US Patent 7577158 Information processing system and access method
Patent 7577158 was granted and assigned to Hitachi on August, 2009 by the United States Patent and Trademark Office.
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A plurality of logical units are set in an information processing device and a storage device and connected by logical paths. The information processing device monitors the path state. When a state change of a path has occurred, the information processing device searches for a normal path connected to the logical unit and decides a logical unit to be an object of the read request. The information processing device issues a data read request to the logical unit decided. Moreover, when a failure has occurred in the path, the information processing device performs an access to the logical unit by utilizing a path other than the path where the failure has occurred and another path sharing a part of the path where the failure has occurred.
US Patent 07577158 Information processing system and access method US Patent 7577158 Information processing system and access method
US Patent 07577158 Information processing system and access method
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