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:
Sep. 12, 2017
Filed:
May. 20, 2013
Hitachi, Ltd., Tokyo, JP;
Takanobu Suzuki, Tokyo, JP;
Norio Shimozono, Tokyo, JP;
Hiroaki Akutsu, Tokyo, JP;
Kohei Tatara, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To detect an abnormality of logical and physical addresses, a storage device includes: plural drives each having a storage medium configuring a logical volume provided to a host device; a front end I/F that receives an I/O request including a logical address for identifying a logical storage area of the logical volume, and user data from the host computer; a processor that controls conversion from the logical address into the physical address for identifying a physical storage area of the storage medium; and a back end I/F that controls write/read of user data with respect to the drives based on the physical address. In the drives, data where a first guarantee code obtained based on the physical address and the logical address corresponding to the physical address is added to the user data is stored in the physical storage area designated by the physical address of the storage medium.