US 2020/0264792 A1 · SYSTEMS AND METHODS FOR BALANCING MULTIPLE PARTITIONS OF NON-VOLATILE MEMORY

Abstract

Systems and methods for balancing multiple partitions of non-volatile memory devices are provided. Embodiments discussed herein execute a balance proportion scheme in connection with a NVM that is partitioned to have multiple partition types. Each partition type has an associated endurance that defines an average number of program/erase (P/E) cycles it can endure before it reaches failure. For example, a first partition type may have a substantially greater endurance than a second partition type. The balance proportion scheme ensures that, even though each partition type has a different associated endurance, all partition types are used proportionally with respect to each other to balance their respective P/E cycles. This way, both partition types will reach the upper limits of their respective endurance levels out at approximately the same time.

Claims20

Dependent claims

A system, comprising:

non-volatile memory comprising first partition and second partition each having a different program/erase endurance;
and
control circuitry configured to:
access parameters associated with each of the first partition and the second partition, wherein the parameters comprise program/erase cycles for each of the first partition and the second partition;
determine a difference between program/erase cycles of the first partition and program/erase cycles of the second partition;
adjust a balance proportion scheme based on the difference;
and
execute write operations by directing data to the first partition and the second partition in accordance with the adjusted balance proportion scheme.

5 more elements

A method implemented in a system comprising non-volatile memory comprising a first partition and a second partition each having different program/erase endurances, the method comprising:

accessing parameters associated with each of the first partition and the second partition;
evaluating the parameters to determine whether the first partition or the second partition is overheating, wherein overheating indicates that one of the first partition and second partition has a higher proportional usage than the other partition;
in response to determining that the first partition is overheating, implementing a first balancing scheme that balances a proportional usage of the first partition relative to the second partition to prevent the first partition from prematurely reaching an end of life parameter;
in response to determining that the second partition is overheating, implementing a second balancing scheme that balances a proportional usage of the second partition relative to the first partition to prevent the second partition from prematurely reaching the end of life parameter;
and
executing write operations by directing data to the first and second partitions in accordance with the first balancing scheme or the second balancing scheme.

3 more elements

Dependencies are inferred from the claim text.

Systems and methods for balancing multiple partitions of non-volatile memory

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Systems and methods for balancing multiple partitions of non-volatile memory

Life of this patent

Abstract

Claims20