Storage systems are essential components in computing that allow for the saving and retrieval of data. They can be categorized into two main types: primary storage, like RAM, which provides fast access to data currently in use, and secondary storage, such as hard drives and solid-state drives, which store data long-term. These systems can also be classified based on their architecture, including direct-attached storage (DAS), network-attached storage (NAS), and storage area networks (SAN). Each type serves different needs, from personal data storage to enterprise-level solutions, ensuring that data is organized, secure, and accessible.