US 11,082,168 B1 · Entropy driven endurance for normalized quality of service

Abstract

Aspects of a storage device including a memory and a controller are provided which allow for data associated with a media stream and having high entropy to be stored in healthier memory locations, with improved data protection, and with more optimal NAND parameters than for data having low entropy. After receiving data associated with a media stream, the controller identifies an entropy level of the data. When the entropy level meets an entropy threshold, the controller stores the data in a first block of the memory associated with a lower BER, and/or with a higher write latency or a first, more discrete voltage. Alternatively, when the entropy level does not meet the entropy threshold, the controller stores the data in a second block of the memory associated with a higher BER, and/or with a lower write latency or a second, less discrete voltage.

Claims19

Dependent claims

A storage device, comprising:

a memory;
and
a controller coupled to the memory and configured to:
receive data associated with a media stream from a host device,
determine whether an entropy level of the data exceeds an entropy threshold,
store the data in a first block of the memory that is associated with a first bit-error-rate (BER) when the entropy level exceeds the entropy threshold, and
store the data in a second block of the memory that is associated with a second BER greater than the first BER when the entropy level does not exceed the entropy threshold.

4 more elements

Dependencies are inferred from the claim text.

Entropy driven endurance for normalized quality of service

Life of this patent

Entropy driven endurance for normalized quality of service

Life of this patent

Abstract

Claims19