The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2015
Filed:
May. 08, 2012
Hiroshi Izuta, Odawara, JP;
Hiroshi Izuta, Odawara, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
Provided is a storage apparatus and a method for controlling the storage apparatus which are capable of achieving both enhancement of data transfer processing efficiency and enhancement of apparatus availability. A storage apparatus including a storage medium for providing an external apparatus with a data storage area has a processing unit including a plurality of processors and a shared memory for storing programs executed by the processors and is configured such that the processors receive data I/O requests and store the data I/O requests in the shared memory as storage medium control information for the storage medium. The storage medium controller executes data processing of writing or reading target data for the corresponding data I/O processing request to or from the storage medium on the basis of the storage medium control information transmitted from the external apparatus. The data transfer controller executes data transfer processing between the processing unit and the storage medium controller in accordance with a predetermined communication method. When the storage medium controller transmits a data transfer request to the data transfer controller and the data transfer controller transfers the data transfer request from the storage medium controller to the processing unit, the data transfer controller sends the storage medium controller data including predetermined error information stipulated for the communication method when determining that the processing unit does not execute the data transfer processing normally, and the storage medium controller determines that a failure has occurred to the processor which is the target of the data transfer request transmitted to the data transfer controller when receiving the predetermined error information.