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Line 21: In February 2016, a study was published that showed little difference in practice between the reliability of SLC and MLC.<ref>{{Cite journal \|title= Flash Reliability in Production: The Expected and the Unexpected \|author= Bianca Schroeder and Arif Merchant \|publisher= Usenix \|journal= Conference on File and Storage Technologies \|date= February 22, 2016 \|isbn= 9781931971287 \|url= https://www.usenix.org/conference/fast16/technical-sessions/presentation/schroeder \|access-date= November 3, 2016 }}</ref> A single-level cell (SLC) flash memory may have a lifetime of about ~~50000~~50,000 to ~~100000~~100,000 program/erase cycles.<ref>[https://www.hyperstone.com/en/NAND-Flash-is-displacing-hard-disk-drives-1249,12728.html NAND Flash is displacing Hard Disk Drives], Retrieved 29 May 2018.</ref> After that is exceeded, the entire storage becomes [[paperweight]]. A single-level cell represents a 1 when almost empty and a 0 when almost full. There is a region of uncertainty (a read margin) between the two possible states at which the data stored in the cell cannot be precisely read.<ref name="anandtech"/>

Multi-level cell: Difference between revisions