A Disk Wear Leveling Method

Abstract

The invention discloses a method for balancing magnetic disc abrasion. The method is applied to video equipment with a pre-recording function. The method is characterized by comprising the following steps: 1) establishing a magnetic disc information table according to the type and the number of magnetic discs; 2) dividing each magnetic disc into a plurality of sub-storage areas with identical sizes, and storing relevant information of the sub-storage areas into the magnetic disc information table; 3) arranging all sub-storage areas into a logic loop, forming a circulation chain table, and sequentially allocating and using the magnetic discs along the circulation chain table. As the magnetic discs are divided into a plurality of sub-storage areas, the magnetic disc information table is established according to the type and the number of the magnetic discs, and all sub-storage areas are arranged into the logic loop, write operation of the magnetic discs can be distributed to all areas to the greatest extent by continuously changing pre-recording areas, and abrasion balance of the magnetic discs can be achieved.

Description

technical field [0001] The invention relates to the field of video recording methods, in particular to a disk wear balancing method applied to a video recording device with a pre-recording function. Background technique [0002] At present, most of the vehicle-mounted DVRs need to realize the pre-recording function, and only save the video data of a certain period of time or the video data of a period of time before a specified event. Because the video data capacity is relatively large, the data with a long pre-recording time cannot be stored in the memory, but must be stored through the disk (storage medium). The current disks only have a certain service life (the number of reads and writes), so it is necessary to design a data read and write mechanism for the disk to evenly disperse the write operations to the disk to extend the service life of the disk. The existing disk wear leveling method only achieves corresponding wear leveling by moving data from one storage area t...

AI Technical Summary

Problems solved by technology

The existing disk wear leveling method only achieves corresponding wear leveling by moving data from one storage area to another. However, during the process of moving and copying data, due to the control of the file system, it is easy to generate disk damage. Fragmented, which will slow down the system and slow down the reading and writing speed of files

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