High Availability

This section describes how Ozone achieves high availability for its metadata managers to eliminate single points of failure.

📄️ SCM High Availability

Ozone has two metadata-manager nodes (Ozone Manager for key space management and Storage Container Management for block space management) and multiple storage nodes (Datanode). Data is replicated between Datanodes with the help of RAFT consensus algorithm.

📄️ Ozone Manager High Availability

Ozone has two metadata-manager nodes (Ozone Manager for key space management and Storage Container Manager for block space management) and multiple storage nodes (Datanode). Data is replicated between Datanodes with the help of RAFT consensus algorithm.