Storage devices are used to store and retrieve digital data in electronic devices. They come in various forms, including hard disk drives (HDDs), solid-state drives (SSDs), and optical discs. Storage devices vary in capacity, speed, and durability, catering to different needs and applications. SSDs are known for their high speed and reliability, while HDDs offer larger capacities at lower costs. Storage devices are essential for data management, backup, and access in computers, servers, and other digital systems.