Acronym · Memory & Storage
FTL (Flash Translation Layer)
The controller firmware that maps host logical block addresses onto physical NAND pages, hiding erase-before-write behaviour, retiring bad blocks and spreading wear.
Its mapping table is the main consumer of an SSD's DRAM.
- Type
- Acronym
- Domain
- Memory & Storage, Storage systems
Notes
DRAM-less drives shrink or offload the mapping table into host memory, which costs random read performance.
Related terms
Part of the Memory & Storage glossary, with every term in the topic and the lifecycles, tools and standards that use them.
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