The author delves into the complexities of NAND flash in SSDs, highlighting misconceptions and outlining how SSDs work. The physical internals of SSDs are examined, explaining the storage of data in arrays of cells made from floating-gate transistors. The differences between SLC, MLC, and TLC cells are discussed, with the author emphasizing that all NAND flash is physically SLC. The article also addresses the myths and misconceptions surrounding SSDs, especially in relation to recovering deleted files. Overall, the piece serves as a mid-level technical discussion on the intricacies of SSD operation and the challenges of understanding this technology.
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