Backup and recovery
- RDS supports automatic and manual backups. You can set the automatic backup frequency or manually create backups at any time. For more information, see Backup and recovery.
- RDS supports data recovery by time or backup set. You can restore data of any point in time within the log retention period to a new instance, verify the data, and then transfer the data to the original instance. For more information, see Backup and recovery.
|High-availability Edition||The High-availability Edition adopts the high-availability architecture with one master node and one slave node. It is applicable to over 80% of scenarios. If the master node fails, a switchover occurs within seconds without affecting your applications. If the slave node fails, a new slave node is automatically generated to ensure high availability.
Note You can switch between single-zone instances and multi-zone instances. For details, see Instance migration across zones.
|Cluster (AlwaysOn) Edition||Based on the AlwaysOn technology, it provides one master node, one slave node, and up to seven read-only nodes that horizontally scale read capabilities. The slave and read-only nodes synchronize data from the master node. The Cluster Edition provides the same availability as the High-availability Edition. Besides, the read-only nodes can be deployed in zones different from those of the master and slave nodes.