Solid state disk and data read-write method

Abstract

The invention discloses a solid state disk and a data read-write method. The solid state disk comprises a memory unit, a write-in control unit and a read control unit, wherein the memory unit comprises an original data region and a backup data region, which have identical memory space structure, and the memory space address of the original data region corresponds to that of the backup data region one by one; the write-in control unit is used for simultaneously writing the data into the original data region and the backup data region of the memory unit according to the data write-in command; and the read control unit is used for reading the data from the original data region of the memory unit according to the data reading command, and when the read error happens, the data is read from the backup data region of the memory unit according to the correspondence of the memory space address. With the above technical scheme, the properties of the solid state disk flash memory chip is used for performing the identical write-in operation for different memory regions of the same hard disk, so the reliability of the data is improved under the condition that the performance of the hard disk is not influenced.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a solid-state hard disk and a method for reading and writing data. Background technique [0002] A solid state disk (Solid State Disk, SSD) is a hard disk composed of a control unit and a solid state storage unit. Its interface specifications, functions, and usage methods are the same as ordinary hard disks. Since the solid-state hard disk does not have the mechanical rotation device of the ordinary hard disk, it has the characteristics of fast reading and writing speed, low working noise, good shock resistance, and wide operating temperature range. [0003] At present, most of the storage media of solid-state hard drives use non-volatile flash memory (flash) chips. Its advantages are that data protection is not controlled by the power supply, it is easy to move, and can be adapted to a variety of environments. The disadvantage is that sometimes there are read and write erro...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the storage media of solid-state hard drives use non-volatile flash memory (flash) chips. Its advantages are that data protection is not controlled by the power supply, it is easy to move, and can be adapted to various environments. The disadvantage is that there are sometimes read and write errors in flash memory blocks. , affecting the reliability of the data

[0004] In response to the above problems, we can improve the reliability of data by establishing redundant data. A common solution is to use backup software or data synchronization software. The disadvantage of this method is that it requires users to perform additional settings or operations , and when performing data backup or synchronization, it needs to occupy system resources and affect the read and write performance of the hard disk

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