Hierarchical storage is a data management approach that organizes storage resources in a tiered structure. This system prioritizes data based on its access frequency, placing frequently used data on faster, more expensive storage devices, while less frequently accessed data is stored on slower, more cost-effective options. This helps optimize performance and reduce costs. In a hierarchical storage system, data is typically categorized into levels or tiers, such as solid-state drives (SSDs), hard disk drives (HDDs), and tape storage. By automatically moving data between these tiers based on usage patterns, organizations can efficiently manage their storage resources and improve overall data accessibility.