TBW measures how many cumulative writes a drive can reasonably expect to complete over its lifespan. SSD Endurance and Durability: TBW and DWPD Terabytes Written (TBW) Additional sources of write amplification include de-duplication, filesystem writes, metadata and log structures, and garbage collection. They are multiple writes for redundancy and crash consistency, where the controller copies data to provide redundancy. Writes are not simply single writes in the user or application layers. When you’re thinking about write cycles, also keep write amplification in mind. TLC: Triple-level cells (3-bit) NAND flash is low at 300-1000 write cycles, and can achieve 1500-3000 write cycles with 3D NAND.eMLC (enterprise MLC) sustains up to10,000 write cycles, and can reach 35,000 cycles on 3D NAND. MLC: The 2-bit data multi-level cell ( MLC) flash generally takes up to 3,000 write cycles. ![]()
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