Solid-state drive

A solid-state drive (SSD) is a data storage device that uses solid-state memory instead of rotating platters to store persistent data. They are often used in battery-powered handheld devices as well as laptop computers.

With no moving parts, SSDs are faster than regular disks because there is zero latency (no read/write head to move). Solid-state drives are less fragile than hard disks and silent, unless a cooling fan is used. They are also more rugged than hard disks and offer greater protection in hostile environments.

SSDs have begun to appear as a storage option in laptops and netbooks, although as of 2009 they are substantially more expensive per unit of capacity than hard drives. Eventually, solid-state drives will replace spinning disk platters in the future.