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- As we said, each FLASH cell can sustain up to 100,000 program/erase
- This makes the life of an SSD very short under heavy write load.
- To alleviate this - the SSD controller employs "write-leveling" techniques.
- It counts how many times each page was programmed.
- When a write arrives, it chooses a block of pages that were least
- This way, all cells will have performed approximately the same
number of program/erase cycles, at any given time.