Method for solid state disk to dynamically store data of conversion layer

Abstract

The invention provides a method for a solid state disk to dynamically store data of a conversion layer. A host sends a data access instruction, access data is judged as cold and hot data, it is checked that the flash memory conversion layer dynamically set by the solid state disk is in part storage modes, the access speeds of different storage mediums are compared, the hot data of the flash memory conversion layer is adjusted to be stored in the storage medium with the high access speed, the cold data is adjusted to be stored in the storage medium with the low access speed, and therefore the access speed is increased.

Description

technical field [0001] The present invention relates to a solid-state hard disk, in particular to a method for dynamically selecting and storing cold and hot data of the conversion layer according to the conversion layer of the solid-state hard disk establishing a management logical entity comparison table. Background technique [0002] A solid state drive (SSD for short) is integrated with a NAND Flash Memory Array into a single storage device. Because the flash memory has a limit on the number of erasures, the data needs to be stored in the flash memory array of the SSD, and the flash translation layer (Flash Translation Layer, referred to as FTL) is used to manage the comparison between the logical address of the data and the physical address actually stored in the flash memory, so as to access to data. [0003] Such as figure 1 Shown is a prior art electronic device storage system 1 . Prior art electronic devices such as computers, mobile phones, etc., a central proce...

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Problems solved by technology

[0005] However, the prior art solid-state hard disk 5 sets the flash translation layer to be built on the buffer memory 7. Once the buffer memory 7 is damaged or partly damaged, the flash translation layer cannot be established, causing the solid-state hard disk 5 to be unable to use the flash translation layer to manage the logical entity comparison table. Fetch data, causing the SSD 5 to be unusable

In addition, depending on the needs of electronic devices, the storage system of SSD 5 is different. Some of them do not have buffer memory installed. access speed

The existing solid-state hard disk 5 cannot dynamically change the establishment position of the flash memory conversion layer with the change of the storage system of the electronic device. At the same time, the hot and cold data of the flash memory conversion layer cannot be dynamically adjusted to an appropriate storage location, and the access speed of the solid-state hard disk is further reduced.

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