Method for backing up comparison table of solid state disk

A solid-state hard disk and comparison table technology, which is applied in the direction of response error generation, input/output process of data processing, and redundancy in operation for data error detection, etc. Problems such as low performance, access performance offset, etc.

Inactive Publication Date: 2018-05-25
QUANTA STORAGE INC
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Problems solved by technology

[0006] However, the aforementioned prior art, such as Figure 8 As shown, the data in the backup logical-physical comparison table is written simultaneously with the user data access, showing the user data access performance curve P. The performance of each segment is lowered by the lower shadow line p, resulting in user data access. Access performance deviation (Deviation), unable to maintain the same user data access performance level

Method used

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  • Method for backing up comparison table of solid state disk
  • Method for backing up comparison table of solid state disk
  • Method for backing up comparison table of solid state disk

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Embodiment Construction

[0031] In order to achieve the above object, the present invention adopts the technical means and its effects, and now presents preferred embodiments, which are described as follows in conjunction with the accompanying drawings.

[0032] Please also see Figure 1 to Figure 3 , figure 1 is a functional block diagram of the electronic device storage system of the present invention, figure 2 It is a schematic diagram of the solid-state hard disk backup comparison table of the present invention, image 3 It is a graph of the access performance of user data in the present invention. figure 1 In the electronic device storage system 10 of the present invention, a central processing unit (CPU) 12 and a dynamic random access memory (DRAM) 13 are arranged on the host computer 11, and the logical address of the user data is accessed by the central processing unit 12 in cooperation with the dynamic random access memory 13 The command is sent to the solid state hard disk (SSD) 15 con...

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Abstract

The invention discloses a method for backing up the comparison table of a solid state disk. When user data is simultaneously processed and accessed and unit backup data is written, the data size of the unit backup data and interval delay time are regulated to reduce the data size for processing the unit backup data, and processing energy is left to process and access user data to maintain the access efficacy of user data.

Description

technical field [0001] The invention relates to a solid-state hard disk, in particular to a backup method for the solid-state hard disk to write a logical-physical comparison table temporarily stored in a buffer memory into a flash memory. Background technique [0002] A solid state drive (SSD for short) is integrated into a single storage device by integrating a NAND Flash Memory Array (NAND Flash Memory Array). Because the flash memory has a limit on the number of erasures, the data needs to be stored scattered in the flash memory array of the solid-state hard disk, and the logical to physical mapping table (Logical to PhysicalMapping Table) is used to manage the logical address of the data and the physical location actually stored in the flash memory. The comparison relationship of the address is convenient for accessing the data of the solid-state hard disk. [0003] Such as Figure 7 As shown, when the solid-state hard disk in the prior art is started, in order to mana...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1448G06F11/1456G06F11/1461G06F2212/7203G06F11/1441G06F12/0246G06F2212/7201G06F3/0688G06F3/0655G06F3/061
Inventor 刘安特洪骏宏谢景星
Owner QUANTA STORAGE INC
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