The storage system uses global wear leveling. When the SSD disk wear reaches a certain level, it will prioritize wearing out a small number of disks, allowing the SSD disks to be damaged one by one…

The storage system uses global wear leveling. When the SSD disk wear reaches a certain level, it will prioritize wearing out a small number of disks, allowing the SSD disks to be damaged one by one, avoiding failure of multiple disks at the same time, thereby greatly improving the reliability of the storage system.