Overview of Master Mirroring

The primary master continues to provide service to users while a transactional snapshot of the primary master instance is taken. While the transactional snapshot is taken and deployed on the standby master, changes to the primary master are also recorded. After the snapshot is deployed on the standby master, the updates are deployed to synchronize the standby master with the primary master.

Note: WAL logging is not yet available for segment mirroring.