Wear leveling (also written wear levelling) is a technique for prolonging the service life of some kinds of erasable computer storage media, such as Flash memory used in solid-state drives (SSDs) and USB Flash drives. There are a few wear leveling mechanisms used in Flash memory systems, each with varying levels of longevity enhancement.
The term preemptive wear leveling (PWL) has been used by Western Digital to describe their preservation technique used on audio-video hard disks, but hard disk drives are not generally wear-leveled devices in the context of this article.
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Famous quotes containing the word wear:
“In time the scouring of wind and rain will wear down the ranges and plane off the region until it has the drab monotony of the older deserts. In the meantime—a two-million-year meantime—travelers may enjoy the cruel beauties of a desert in its youth,....”
—For the State of California, U.S. public relief program (1935-1943)