![]() ![]() ![]() The first protection comes in the form of wear leveling, designed to evenly distribute stored data between SSD blocks to ensure even wear. Wear leveling is one of the major differences between a regular magnetic hard drive and a solid-state drive.Ī traditional hard drive stores files in physical locations on a magnetic platter. The operating system indexes the file locations in a file system and accesses the data using a mechanical arm. Whereas a solid-state drive is a form of flash memory, like a USB thumb drive-but with a much larger capacity. Each write process causes the memory to degrade or "wear." Instead of writing to a location on a physical disc, an SSD writes the data to a block. While the SSD uses a file system to communicate data storage locations to the host system, it also re-shuffles the data to ensure even wear across all memory blocks. Changes made for wear leveling record to a separate file map. In other words, SSDs do not use any physically indexable locations, and software cannot specifically target sectors on the disk.
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