Wear Leveling is a widely used flash management technique that ensures data is evenly written to all blocks on a Flash device, preventing overuse of specific blocks and enhancing the device’s endurance and stability.

How Wear Leveling Works:

The controller tracks erase counts of each block and directs new data to blocks with the lowest erase count. This ensures a more balanced write distribution, reducing overwrites and prolonging the device’s lifespan.

Types of Wear Leveling:

Dynamic Wear Leveling: Considers available space and directs writes to blocks with lower erase counts within that space.

Static Wear Leveling: Considers a single Flash chip unit, moving data from blocks with lower erase counts to other blocks to free up low-erase-count blocks for reuse.

Global Wear Leveling: Uses a more powerful controller, extending its scope to the entire device, directing writes to blocks with lower erase counts across the entire device.

Summary:

Wear Leveling averages write actions across the device, extending its lifespan. It is a vital technique in Flash products, and YANSEN’s Flash product lineup supports Wear Leveling to ensure endurance and reliability.