Intel Corporation

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Robert W Faber

Jawad Basit Khan

Prashant S Damle

Raj K Ramanujan

Leena K Puthiyedath

Matthew Goldman

Provided is a non-volatile memory device comprising a plurality of memory cells and memory control logic that when executed performs operations comprising initiating a refresh operation; in response to the refresh operation, performing a read of the memory cells to read values of the memory cells; determining whether the read memory cells have a first value or a second value; and for the memory cells determined to have the first value, rewriting the determined first value to the memory cell, wherein the rewriting operation is not performed with respect to memory cells determined to have the second value.

Refresh logic to refresh only memory cells having a first value

Systems and methods of memory cell wear management that can achieve a more uniform distribution of write cycles across a memory cell address space. The systems and methods allow physical addresses of memory cells subjected to a high number of write cycles to be swapped with physical addresses of memory cells subjected to a lower number of write cycles. The physical address of a group of memory cells is a 'hot address' if the write cycle count for that memory cell group exceeds a specified threshold. If the write cycle count for a group of memory cells does not exceed the specified threshold, then the physical address of that memory cell group is a 'cold address'. The systems and methods allow the specified threshold of write cycle counts to be dynamically incremented to assure that cold addresses are available for swapping with hot addresses in the memory cell address space.

Flexible wear management for non-volatile memory

An apparatus may comprise a non-volatile random access memory to store data and a processor coupled to the non-volatile random access memory. The apparatus may further include a data de-duplication module operable on the processor to read a signature of incoming data, compare the signature to first data in the non-volatile random access memory, and flag the incoming data for discard when the signature indicates a match to the first data. Other embodiments are disclosed and claimed.

Method and system for data de-duplication

Embodiments of the invention describe methods, systems and apparatuses to improve solid state device (SSD) write speed by efficiently utilizing error correction code executed for the device. SSDs may be comprised of several NAND memory devices. It is understood that such devices tend to have a raw bit error rate (RBER) that is related to the program/erase cycle count for the device. Embodiments of the invention efficiently use system ECC by changing the operating conditions of the SSD to better utilize the robustness of the implemented ECC algorithm. For example, embodiments of the invention may alter the programming voltage supplied to an SSD to increase write speed; such an increase may increase the RBER of the device, but will not affect the accuracy of such operations due to the ECC that is provisioned for end of life storage fidelity (i.e., the RBER that will occur at the end of life).

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Hillsboro, OR, United States of America

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