How do SSDs work?
Solid state drives (SSDs) use a combination of NAND flash memory technology and advanced controller algorithms. NAND flash memory is the primary storage component, divided into blocks and pages. An SSD contains a controller chip that manages data storage, retrieval, and optimization. The controller’s major duties are wear leveling, which evenly distributes write and erase cycles to extend the SSD’s lifespan which consolidates empty blocks to maintain optimal performance. SSDs also use features like the TRIM command to increase efficiency by telling the drive about wasted data blocks. Furthermore, data compression and error correction techniques are used to increase storage capacity while maintaining data integrity.
Introduction to Solid-State Drive (SSD)
SSD is a non-volatile storage device, which stands for Solid State Drive, and protocols such as SATA and SAS of traditional hard disk drives (HDD) may be used. New form factors such as the M.2 form factor, and new I/O protocols such as NVM Express have been developed to address specific requirements of the Flash memory technology used in SSDs.