Memory management method and storage device

By performing hash mapping in the memory module, hotspot data is dispersed from a smaller number of physical areas to a larger number of areas for storage, solving the problem of low hotspot data reading speed in non-volatile memory and achieving more efficient data access.

CN120848804APending Publication Date: 2025-10-28HEFEI KAIMENG TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510996188.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2025-10-28

AI Technical Summary

Technical Problem

Traditional non-volatile memory has a low read speed when storing data in hot spots, and existing data migration methods have failed to effectively solve the read speed problem of hot data storage locations.

Method used

By executing hash mapping in the memory module, hotspot data is copied from a smaller number of physical areas to a larger number of physical areas, thereby achieving distributed data storage and improving reading efficiency by utilizing parallel access of multiple chips and multiple planes.

Benefits of technology

This effectively improves the storage device's reading speed and data access efficiency for hot data, avoiding a decrease in reading efficiency and bandwidth waste.

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Abstract

The invention provides a memory management method and a storage device. The method comprises the following steps: after triggering a data integration operation, determining a plurality of source units in a first entity management unit in a memory module; according to the plurality of source units, performing hash mapping to determine a plurality of target units in a second entity management unit in the memory module, the source units being located in the first entity area, the target units being located in the second entity area, and the total number of the second entity areas being greater than the total number of the first entity areas; and copying the valid data stored in the source unit to the target unit in the data integration operation. Therefore, the data access efficiency of the storage device can be improved.
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