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Method and device for improving MLC NAND performance and medium

A performance and garbage technology, applied in the field of computer storage equipment, can solve the problems of consumption performance and lifespan, backup data, etc., to achieve the effect of ensuring safety, long life and high performance

Active Publication Date: 2021-05-25
珠海妙存科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technology has a lot of backup data, which greatly consumes performance and life

Method used

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  • Method and device for improving MLC NAND performance and medium
  • Method and device for improving MLC NAND performance and medium
  • Method and device for improving MLC NAND performance and medium

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Embodiment Construction

[0019] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0020] In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number.

[0021] In the description of the present invention, the continuous labeling of the method steps is for the convenience of review and understanding. In combination with the overall technical solution of the present invention and the logical relationship between each step, adjusting the implementation order between the steps will not affect the te...

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Abstract

The invention relates to a method and device for improving MLC NAND performance and a medium. According to the technical scheme, the method comprises the steps of writing an LSB data page, judging an MLC block in which garbage collection data is written, if the written page is the LSB data page, judging whether a paired MSB data page exists or not, and if the paired MSB data page exists, recording a garbage collection source block corresponding to the data; and writing in the MSB data page, judging whether the most recently written data page is the MSB data page or not; if so, obtaining the garbage collection source blocks corresponding to the data stored in the paired LSB data page, and executing corresponding processing according to the collection state of the garbage collection source blocks. The method and device have the advantages that data safety after abnormal power failure is guaranteed, meanwhile, less backup data are written in, and the device has higher performance and longer service life.

Description

technical field [0001] The invention relates to the field of computer storage devices, in particular to a method, device and medium for improving the performance of MLC NAND. Background technique [0002] As an important storage medium, NAND Flash devices are more and more widely used due to their high performance, high storage density, small size and many other advantages. MLC NAND is widely used among many types of NAND Flash. It has unique physical characteristics. When the MSB page (MSB data page) is abnormally powered off when it is being programmed, not only the data of the MSB page is wrong, but also the previous confirmation of normal writing The LSB page (LSB data page) data will also be destroyed, resulting in data loss. To solve this problem, the most common method in the industry is to back up the data of the LSB page to avoid data loss caused by abnormal power failure. Backing up data itself is a redundant operation, which will reduce the performance and lifes...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F11/14
CPCG06F3/061G06F3/064G06F3/0679G06F11/1479
Inventor 曾裕
Owner 珠海妙存科技有限公司
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