Techniques for providing data redundancy after reducing memory writes

A non-transitory machine-readable storage medium having embodied therein a computer program product, comprising:

• computer code for instructing a computer to execute writes to a storage subsystem via a standard storage subsystem interface;
• computer code for providing, at least in part via the storage subsystem, a reducing of a number of the writes and a forwarding of the reduced number of writes to a single drive of the storage subsystem, the single drive having one or more primary storage devices and one or more redundant storage devices, the storage devices having storage device interfaces;
• computer code for providing, at least in part via a disk controller of the storage subsystem, a data redundancy scheme comprising storing data associated with the reduced number of writes in the primary storage devices and storing computed redundancy information in the redundant 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.

An apparatus comprising:

• a circuit enabled to receive and reduce a number of writes from a computer via a standard storage subsystem interface;
• a single drive comprising one or more primary storage devices, one or more redundant 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 primary storage devices and storing computed redundancy information in the redundant 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.