Tiered data storage system
AssigneeSeagate Technology LLC
InventorsMark Allen Gaertner, Mehmet Fatih Erden
Life of this patent
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Abstract
A storage media comprising a first storage subset with a first value of a storage media characteristic and a second storage subset with a second value of the storage media characteristic, the first value of a storage media characteristic being substantially different than the second value of the storage media characteristic and a storage controller configured to allocate a plurality of logical block addresses (LBAs) between the first storage subset and the second storage subset based on a predetermined criterion in view of the first value of the storage media characteristic and the second value of the storage media characteristic.
Claims20
A storage device, comprising:
- a storage media comprising a first storage subset with a first value of a storage media characteristic and a second storage subset with a second value of the storage media characteristic, the first storage subset being configured to store or read data using at least one of (1) multi-level recording with single reader, (2) multi-track recording with multiple readers, and (3) combination of multi-level and multi-track recording with multiple readers having multiple levels under each reader;
- and
- a storage controller configured to map a range of logical block addresses (LBAs) using a predetermined criterion based on the values of the storage media characteristics for the first storage subset and the second storage subset.
A storage device, comprising:
- a storage media comprising a first storage subset with a first value of a storage media characteristic and a second storage subset with a second value of the storage media characteristic, the first value of a storage media characteristic being substantially different than the second value of the storage media characteristic;
- and
- a storage controller configured to allocate a plurality of logical block addresses (LBAs) between the first storage subset and the second storage subset based on a predetermined criterion in view of the first value of the storage media characteristic and the second value of the storage media characteristic.
A method, comprising:
- selecting a range of LBAs;
- and
- remapping the range of selected LBAs to one of a plurality of data storage subsets based on a predetermined criterion using a value of a storage media characteristic of the plurality of data storage subsets, the value of the storage media characteristics being at least one of data rate, storage capacity, storage density, storage reliability, power usage per unit storage, and total cost of ownership (TCO).
Dependencies are inferred from the claim text.