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AssigneeKabushiki Kaisha Toshiba
InventorsKazuhiro FUKUTOMI, Hiroshi Yao, Shinichi Kanno, Shigehiro Asano, Toshikatsu Hida, Yasuhiro Kimura
Estimating the term…
According to one embodiment, a controller controls writing into and reading from a storage apparatus that includes a first data-storage unit and a second data-storage unit. The second data-storage unit stores user data and parity data of the user data. The first data-storage unit stores the parity data. The controller includes a parity updating unit and a parity writing unit. When parity data is updated, the parity updating unit writes the updated parity data into the first data-storage unit. When a certain requirement is satisfied, the parity writing unit reads the parity data written in the first data-storage unit, and writes the parity data thus read into the second data-storage unit.
A controller that controls writing into a first data-storage unit and a second data-storage unit included in a storage apparatus, and reading from the first data-storage unit and the second data-storage unit, the second data-storage unit storing user data of which writing is requested by a host device and parity data of the user data, the first data-storage unit storing the parity data, the controller comprising:
A storage apparatus comprising:
A computer program product having a computer readable medium including programmed instructions, wherein when executed by a computer that controls writing into and reading from a first data-storage unit and a second data-storage unit included in a storage apparatus, the first data-storage unit storing parity data of user data of which writing is requested by a host device, and the second data-storage unit storing the user data and the parity data, the instructions cause the computer to function as:
Dependencies are inferred from the claim text.