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US 9,128,872 B2Granted
Techniques for providing data redundancy after reducing memory writes
AssigneeSeagate Technology LLC
InventorRadoslav Danilak
Life of this patent
Estimating the term…
Abstract
A storage subsystem receives writes via a storage subsystem interface and reduces a number of the writes. Data associated with the reduced number of writes is stored in storage devices of a single drive. Computed redundancy information is stored in the storage devices. A data redundancy scheme is implemented via a disk controller that is enabled to operate without a loss of data in the presence of at least a single failure of any of the storage devices.
Claims23
A method comprising:
- receiving and reducing a number of writes via a storage subsystem interface;
- storing data associated with the reduced number of writes in one or more storage devices of a single drive and storing computed redundancy information in the storage devices to implement a data redundancy scheme via a disk controller;
- and
- wherein the disk controller is enabled to operate without a loss of data in the presence of at least a single failure of any of the storage devices.
1 more element
A non-transitory machine-readable storage medium having embodied therein a computer program product, comprising:
- computer code for receiving and reducing a number of writes via a storage subsystem interface;
- computer code for storing data associated with the reduced number of writes in one or more storage devices of a single drive and storing computed redundancy information in the storage devices to implement a data redundancy scheme via a disk controller;
- and
- wherein the disk controller is enabled to operate without a loss of data in the presence of at least a single failure of any of the storage devices.
1 more element
An apparatus comprising:
- a circuit enabled to receive and reduce a number of writes via a storage subsystem interface;
- a single drive comprising one or more storage devices and a disk controller;
- wherein the storage devices have storage device interfaces, the single drive is enabled to implement, at least in part via the disk controller, a data redundancy scheme comprising storing data associated with the reduced number of writes in the storage devices and storing computed redundancy information in the storage devices;
- and
- wherein the disk controller is enabled to operate without a loss of data in the presence of at least a single failure of any of the storage devices.
2 more elements
Dependencies are inferred from the claim text.