Description: A subpool in the context of distributed storage systems refers to a smaller division within a larger storage group. Distributed storage systems enable the efficient and scalable management of large volumes of data. Subpools are essential for organizing and managing storage resources, allowing for better administration and performance optimization. Each subpool can contain a specific set of nodes or storage devices that work together to provide redundancy and high availability. This hierarchical structure facilitates resource allocation, policy implementation, and disaster recovery improvement. Additionally, subpools allow system administrators to segment data and workloads, resulting in more efficient use of available resources. In summary, subpools are key components in distributed storage architectures, contributing to flexibility and robustness in complex storage environments.