US 2022/0029641 A1 · Data Reliability for Extreme Temperature Usage Conditions in DATA Storage

Abstract

Systems, methods, and apparatus related to memory devices such as solid state drives. In one approach, data is received from a host system (e.g., data to be written to an SSD). The received data is encoded using a first error correction code to generate first parity data. A temperature at which memory cells of a storage device (e.g., the SSD) will store the received data is determined. In response to determining the temperature, a first portion of the received data is identified (e.g., data in memory storage that is error-prone at a predicted higher temperature that has been determined based on output from an artificial neural network using sensor(s) input). The identified first portion is encoded using a second error correction code to generate second parity data. The second error correction code has a higher error correction capability than the first error correction code. The encoded first portion, the first parity data, and the second parity data are stored in the memory cells of the storage device.

Claims20

Dependent claims

A method comprising:

receiving data from a host system;
encoding the received data using a first error correction code to generate first parity data;
determining a temperature at which memory cells will store the received data;
identifying at least a first portion of the received data that is to be stored in a part of the memory cells susceptible to the determined temperature;
encoding the first portion of the received data using a second error correction code to generate second parity data, wherein the second error correction code has a higher error correction capability than the first error correction code;
and
storing the first portion, the first parity data, and the second parity data in the memory cells.

4 more elements

A system comprising:

a storage device configured to store data from a host system;
and
at least one processing device configured to:
receive first data from the host system;
encode the first data using a first error correction code to generate first parity data;
determine at least one of a temperature at which the storage device will store the first data, or a time duration during of storagc for which the storage device will store the first data;
identify at least a first portion of the first data that is to be stored in a part of the storage device susceptible to the determined temperature or the determined time duration;
encode the first portion of the first data using a second error correction code to generate second parity data, wherein the second error correction code has a higher error correction capability than the first error correction code;
and
store the first portion, the first parity data, and the second parity data in the storage device.

7 more elements

A non-transitory computer-readable medium storing instructions which, when executed in a memory sub-system, cause the memory sub-system to perform a method, the method comprising:

receiving first data from a host system;
encoding the first data using a first error correction code to generate first parity data;
determining that a storage device configured to store data received from the host system is receiving a power supply below a predetermined threshold;
identifying at least a first portion of the first data that is to be stored in a part of the storage device susceptible to the power supply falling below the predetermined threshold;
encoding the first portion using a second error correction code to generate second parity data, wherein the second error correction code has a higher error correction capability than the first error correction code;
and
storing the first portion, the first parity data, and the second parity data in the storage device.

4 more elements

Dependencies are inferred from the claim text.

Data Reliability for Extreme Temperature Usage Conditions in DATA Storage

Life of this patent

Data Reliability for Extreme Temperature Usage Conditions in DATA Storage

Life of this patent

Abstract

Claims20