Storage method and reading method of solid state disk mapping relation and solid state disk

A technology of mapping relationship and solid-state hard disk, applied in the direction of memory system, memory architecture access/allocation, instrument, etc., can solve the problem of low processing efficiency of solid-state hard disk mapping relationship, achieve the goal of reducing overhead, reducing performance overhead, and improving reading efficiency Effect

CN109684238APending Publication Date: 2019-04-26HUNAN GOKE MICROELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-04-26

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Abstract

The invention provides a solid state disk mapping relation storage method, a solid state disk reading method and a solid state disk, and the storage method comprises the steps: storing a mapping relation of a write request into a first memory unit of the solid state disk as a first data segment; When the first memory unit is fully written, the first data segment is converted into a second data segment, and the second data segment is stored in the second memory unit; When the remaining capacity of the second memory unit is smaller than a first preset threshold value, the second data segment isconverted into a third data segment, and the third data segment is stored in a third memory unit; And when the remaining capacity of the third memory unit is smaller than a second preset threshold value, moving the third data segment into the solid state disk storage chip. According to the solid state disk mapping relation storage method, the solid state disk reading method and the solid state disk provided by the invention, the performance cost caused by the solid state disk reading-writing mapping relation is effectively reduced.
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Description

technical field

[0001] The present application relates to the technical field of solid-state hard disks, and in particular to a method for storing mapping relationships of solid-state hard disks, a method for reading them, and solid-state hard disks. Background technique

[0002] Nandflash particles used in solid-state drives, due to their advantages in physical characteristics, greatly improve the efficiency of persistent storage, especially random read and write. However, the erasing life limit of Nandflash particles also leads to the solid state hard disk must dynamically record the mapping relationship between the user's read and write address (logical address) and the actual address (physical address) of the particle, in order to use every transistor on the particle as evenly as possible . For example, when a user repeatedly submits modifications to the same logical address, the SSD needs to record data to different transistors.

[0003] In the prior art, by installin...

Examples

Embodiment Construction

[0049] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0050] see figure 1 , is a schematic flowchart of a storage method for a solid-state hard disk mapping relationship provided in the embodiment of the present application, as shown in figure 1 As shown, the storage method of the solid-state hard disk mapping relationship provided by the embodiment of the present application specifically inclu...