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:
“The prince in disguise makes the most charming beggar in the world, no doubt; but that is because—as all fairy-tales from the beginning of time have taught us—the prince wears his rags as if they were purple. And, to do that, he not only must once have worn purple, but must never forget the purple that he has worn. And to the argument that all cannot wear purple, I can ... only reply that that seems to me to be no reason why all should wear rags.”
—Katharine Fullerton Gerould (1879–1944)