A
solid-state drive (
SSD, also known as a
solid-state disk although it contains neither an actual disk nor a drive motor to spin a disk) is a
solid-state storage device that uses
integrated circuit assemblies as
memory to store data
persistently. SSD technology primarily uses electronic interfaces compatible with traditional
block input/output (I/O)
hard disk drives, which permit simple replacements in common applications. Additionally, new I/O interfaces, like
SATA Express, have been designed to address specific requirements of the SSD technology.