Database High Availability: HADR, HACMP, Data Replication, Storage DR, and DPF Solutions
This article provides a comprehensive overview of database high‑availability techniques—including DB2 HADR, HACMP clustering, SQL and Q replication, storage‑layer disaster recovery, and DPF considerations—explaining their features, suitable scenarios, and how they can be combined to achieve robust end‑to‑end resilience.