A single-disk fast recovery method for ssd-based raid6 system

Abstract

The invention relates to a single-disc quick recovery method machine based on RAID6 of SSD. According to the method, based on the RAID6 system of the SSD, wherein the RAID6 system uses the RDP to code, by adding an additional piece of redundancy equipment, on the premise that the reliability is high when errors are allowed to happen to double-disc, the segmentation sum required by the single-disc recovery is further reduced, so that the recovery efficiency of the system single-disc is improved, the reconsitution time is shortened, the load balancing of the system is achieved, and finally the service quality of the system can be promoted. Aiming at the error of any single data disc in an original system, the fragmentation sum required by the single-disc recovery of the system can be reduced; aiming at the error of any single data disc in the original system, the bottleneck might borne by the original system in the single-disc recovery process can be fractured, and the load balancing of all equipment is achieved; by using the binary xor sum, the updating cost of a newly added redundancy disc is reduced, and therefore the service life of the newly added redundancy disc is prolonged.

Description

technical field [0001] The present invention is applicable to the technical field of flash memory solid-state storage, and provides a single-disk fast recovery method of a 6-level redundant array of disks RAID6 (Redundant Arrays of Independent Disks 6) system based on a solid-state disk SSD (Solid State Drive), improving the single-disk recovery method of the system. Disk recovery efficiency and reliability. Background technique [0002] Compared with traditional magnetic storage media, flash memory (Flash Memory) technology has set off an emerging revolution in the storage field by virtue of its significant advantages in size, weight, power consumption, and read and write performance. an ideal medium. [0003] In order to be better compatible with and inherit traditional disk technology and related products, manufacturers in the industry have combined and packaged multiple NAND flash-based chips into a solid-state storage SSD (Solid State Drive) similar to traditional disk...

AI Technical Summary

Problems solved by technology

[0011] These studies are all carried out under the condition that the capacity of a single disk is small, which ignores the characteristics that the capacity of a single storage device has increased rapidly with the development of technology and technology in recent years, and the low price of unit storage has made the system service quality become increasingly serious. important

Moreover, the above studies are all based on the situation that the redundancy situation is fixed.

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