Definition
Storage refers to the physical or virtual components used to retain and retrieve digital data. It encompasses a wide range of technologies, from solid-state drives and hard disk drives in individual computers to vast cloud-based object storage systems. In practice, data is written to and read from storage devices through interfaces and protocols, enabling applications and users to access information. Understanding storage is crucial for IT professionals to optimize performance, ensure data availability, and manage costs effectively. For instance, a company might use a Storage Area Network (SAN) to provide block-level storage access to multiple servers. This differs from network attached storage (NAS), which offers file-level access over a network. Concepts of storage are fundamental to domains like cloud computing, network infrastructure, and data management, appearing in certifications such as AWS SAA.