A particle process underlying SSD storage structures
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abstract
We introduce a particle process that models the evolution of page configurations in solid-state-drive (SSD) storage devices. These devices use integrated circuitry as memory to store data. Typically, pages (units of storage) are organized into blocks of a given size. Three operations are permitted: write, read, and clean. Rewrites are not allowed, i.e., a page has to be "cleaned" before the write operation can be repeated. While the read and write operations are permitted on individual pages, the clean operation can be executed on whole blocks only. Analysis of our particle process captures a key tradeoff in the operation of SSD's.
