DR Overview
To prevent service unavailability caused by regional faults, DRS provides disaster recovery to ensure service continuity. You can easily implement disaster recovery between on-premises and cloud, without the need to invest a lot in infrastructure in advance.
The disaster recovery architectures, such as two-site three-data-center and two-site four-data center, are supported.
Supported Database Types
The following table lists the database types supported by DRS.
|
Service Database |
DR Database |
Documentation |
|---|---|---|
|
RDS for MySQL |
Principles of Real-Time Disaster Recovery
DRS uses the real-time replication technology to implement disaster recovery for two databases. The underlying technical principles are the same as those of real-time migration. The difference is that real-time DR supports forward synchronization and backward synchronization. In addition, disaster recovery is performed on the instance-level, which means that databases and tables cannot be selected.
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