While primary storage (RAM and cache memory) provides fast access to data during active tasks, secondary storage plays a crucial role in retaining data over the long term. Secondary storage devices are non-volatile and serve as the primary means for storing the operating system, applications, user files, and other data that persists even when the computer is turned off.

Secondary storage is crucial for the overall functionality of a computer system. It serves as a repository for the operating system, applications, user files, and other data that need to be preserved over time. Secondary storage enables users to store and access a diverse range of information, from documents and images to software installations and multimedia content. Additionally, it facilitates data backup and recovery, providing a safeguard against data loss.