Wear Leveling

Wear leveling is a key solution for managing the limited program/erase (P/E) cycles of NAND flash memory. By evenly distributing wear across memory blocks, wear leveling extends the lifespan and reliability of flash devices. SP Industrial SD and microSD cards incorporate three wear leveling techniques: dynamic, static, and global.

 

• Dynamic Wear Leveling：Dynamic wear leveling focuses on frequently changing data. It assigns dynamic data to blocks with the fewest P/E cycles, balancing usage. While simple and effective for active data, it is less comprehensive for long-term wear distribution.
• Static Wear Leveling：Static wear leveling considers both active and rarely used data. It redistributes static data to evenly spread wear across the memory, preventing hotspots and extending the device's lifespan.
• Global Wear Leveling：Global wear leveling works across the entire storage device, redistributing write activity to prevent localized wear. This ensures uniform usage across all zones, maximizing durability.

 

SP Industrial Card Features：

SP Industrial’s SD and microSD cards use a combination of dynamic, static, and global wear leveling to ensure data reliability and extended performance.

These technologies make SP Industrial cards ideal for demanding environments like vehicle telematics, 4G/5G base station logging, dash cameras, and medical ventilators, providing reliable data storage and long-term durability.