What is wear leveling in SSDs?

What is wear leveling in SSDs?

• A. Distributes write/erase cycles evenly across memory cells to extend SSD lifespan
• B. It increases wear on specific memory cells
• C. It speeds up data transfer
• D. It reduces SSD capacity

Answer: (A)

Wear leveling is the technique used to extend the life of SSDs by distributing write and erase cycles evenly across memory cells. Flash memory blocks wear out after a limited number of writes, so if data is always written to the same area, those cells wear out early while others stay unused. The SSD controller spreads writes across many blocks, moves data around when necessary (garbage collection), and reuses less-used blocks to keep wear balanced. This helps prevent early failure of parts of the drive and preserves performance and capacity over time. It’s not about speeding up data transfer, and it doesn’t aim to reduce capacity—the goal is longevity by preventing uneven wear.

Wear leveling is the technique used to extend the life of SSDs by distributing write and erase cycles evenly across memory cells. Flash memory blocks wear out after a limited number of writes, so if data is always written to the same area, those cells wear out early while others stay unused. The SSD controller spreads writes across many blocks, moves data around when necessary (garbage collection), and reuses less-used blocks to keep wear balanced. This helps prevent early failure of parts of the drive and preserves performance and capacity over time. It’s not about speeding up data transfer, and it doesn’t aim to reduce capacity—the goal is longevity by preventing uneven wear.