DB2 Mirror

DB2 Mirror is a high-availability feature of IBM’s DB2 relational database management system that provides continuous availability of critical data. It is designed to ensure that data is always available, even in the event of a failure of the primary database or its associated hardware or network components.

DB2 Mirror uses two separate DB2 database instances, one running on the primary server and the other running on a standby server. The two instances are kept in sync using synchronous data replication, which means that every transaction is sent to both instances and confirmed before the transaction is considered complete.

If the primary database or its associated hardware or network components fail, DB2 Mirror automatically switches to the standby database, ensuring that the data is still available. The switch can happen within seconds and is transparent to the application accessing the data.

DB2 Mirror provides a reliable and scalable solution for organizations that require high availability for their critical data, such as financial institutions, healthcare organizations, and e-commerce companies.