OSD (Object Storage Daemon)

An Object Storage Daemon (OSD) is a key component in a storage system that manages data storage, retrieval, and replication. Think of it as a dedicated server responsible for handling individual pieces of data called objects, ensuring they are saved correctly, kept safe through copies, and accessible when needed. OSDs work together within a larger system, like a team, to provide reliable, scalable storage whether handling small files or massive data sets. They enable cloud storage solutions and large-scale data centers to operate efficiently and securely by automating data management behind the scenes.