Method for rapidly booting solid state disc and solid state disc thereof

Abstract

The invention is applied to the technical field of solid state discs and provides a method for rapidly booting a solid state disc and the solid state disc of the method. The method includes the following steps that the step of writing data is performed, when the data are written into the solid state disc, according to the physical page address distributed for the data, page mapping table information and block element data in each flash memory block where the physical page address exists are written into the preset position of each flash memory block or logic address information corresponding to a record physical page address; the step of recovery is performed; when the solid state disc is electrified and recovered, all the flash memory blocks of the solid state disc are traversed and when the data are stored at the preset positions of the flash memory blocks, the page mapping table information and the block element data are read from the preset positions and an address mapping table of a solid state disc flash memory conversion layer is recovered; or when no data are stored at the preset position of each flash memory block, the address mapping table of the solid state disc flash memory conversion layer is recovered according to the logic address information corresponding to the physical page address. Therefore, by means of the method, the solid state disc is rapidly booted when being electrified and recovered.

Description

technical field [0001] The invention relates to the technical field of solid-state hard disks, in particular to a method for quickly starting a solid-state hard disk and the solid-state hard disk. Background technique [0002] Since the solid-state drive uses the Flash Translation Layer (FTL, Flash Translation Layer) to provide an address mapping table, that is, the mapping relationship between logical addresses and physical addresses, the address mapping table, including other metadata, needs to be read when the solid-state drive is powered on. In a large-capacity solid-state hard drive, the address mapping table is usually large, hundreds of MB or several GB, and it is difficult to quickly write the table into the solid-state hard drive when an abnormal power failure occurs. During an abnormal power failure, each table entry of the FTL is restored by reading metadata page by page, resulting in a very slow power-on time. [0003] At present, the commonly used method is to ...

AI Technical Summary

Problems solved by technology

In large-capacity solid-state drives, the address mapping table is usually large, hundreds of MB or several GB, and it is difficult to quickly write the table into the solid-state drive when the power is abnormally cut off.

When an abnormal power failure occurs, each table entry of the FTL is restored by reading metadata page by page, resulting in a very slow power-on time

[0003] At present, the commonly used method is to add a capacitor to the solid-state hard disk, supply power through the capacitor, and ensure that the FTL address mapping table can be saved to the solid-state hard disk when abnormal power failure occurs, but this method has great limitations, the capacitor power is limited, and large-capacity solid-state The hard disk FTL entry is very large, and at the same time, when the write cache is enabled, the cached data also needs to be saved

[0004] To sum up, it can be seen that the actual use of the existing solid-state hard disk startup technology obviously has inconvenience and defects, so it is necessary to improve it

Images