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Dell PowerVault ME4 Series Storage System Administrator’s Guide

Wear leveling

Wear leveling is a technique for prolonging the service life of some kinds of erasable computer storage media, such as the flash memory used in SSDs. It attempts to ensure that all flash cells are written to or exercised as evenly as possible to avoid any hot spots where some cells are used up faster than other locations. There are several different wear leveling mechanisms used in flash memory systems, each with different levels of success.

Vendors have different algorithms to achieve optimum wear leveling. Wear leveling management occurs internal to the SSD. The SSD automatically manages wear leveling, which does not require any user interaction.


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