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Codeword (storage ECC)

A storage ECC codeword is an encoded unit representing a data chunk together with error-correction redundancy.

Related Observatory article: Codeword (storage ECC) on hesela.com

A NAND page can hold multiple codewords. Codeword length and protected payload length are different quantities when redundancy is included; report which one a size or error-rate denominator uses. A codeword is not automatically a sector, NAND page or erase block. [1]

Relations

related
error-correcting-code, ldpc, reed-solomon-code, nand-flash, bit-error-rate

Limitations

Citations

  1. Cai et al. Error Characterization, Mitigation, and Recovery in Flash Memory Based Solid-State Drives (2017), sections II.C and VI.C. (accessed 2026-10-12)
  2. Hesela: LDPC in NAND, the read cost of confidence. (accessed 2026-10-12)

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