Disk storage apparatus and method for managing storage area
AssigneeKabushiki Kaisha Toshiba
InventorsShingo Takeda, Naoaki Kawana
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Abstract
According to one embodiment, a disk storage apparatus includes a disk having a storage area, a storage device storing management information, and a controller. The storage area includes a plurality of areas. The management information includes information indicative of a use priority or rank of each of the areas. The information indicative of the use priority or rank is set based on a quality index relating to a read operation or a write operation. The controller selects an area which is high in the use priority or rank and is usable, by referring to the management information, and executes the write operation on the selected area.
Claims20
A disk storage apparatus comprising:
- a disk comprising a storage area having a plurality of areas;
- a storage device configured to store management information including information indicative of a use priority or rank of each of the areas, the information indicative of the use priority or rank being set based on a quality index relating to a read operation or a write operation;
- and
- a controller configured to select an area which is high in the use priority or rank and is usable, by referring to the management information, and to execute the write operation on the selected area.
A method, implemented in a disk storage apparatus comprising a disk and a storage device, for managing a storage area, the disk comprising the storage area having a plurality of areas, the storage device being configured to store management information including information indicative of a use priority or rank of each of the areas, the information indicative of the use priority or rank being set based on a quality index relating to a read operation or a write operation, the method comprising:
- referring to the management information;
- selecting an area which is high in the use priority or rank and is usable;
- and
- executing the write operation on the selected area.
Dependencies are inferred from the claim text.