What Is DRS?
Data Replication Service (DRS) is an easy-to-use, stable, and efficient cloud service for online database migration and real-time database synchronization.
It simplifies data transfers between databases and reduces data transfer costs.
You can use DRS to quickly transfer data between different DB engines.
Real-Time Migration
With DRS, you can migrate data from sources to destinations in real time. You create a replication instance to connect to both the source and destination and configure objects to be migrated. DRS will help you compare metrics and data between source and destination, so you can determine the best time to switch to the destination database while minimizing service downtime.
Real-time migration can be performed over different networks, such as public networks, VPCs, VPNs, and Direct Connect. With these network connections, you can migrate data between different cloud platforms, from on-premises databases to cloud databases, or between cloud databases across regions.
DRS supports incremental migration, so you can replicate ongoing changes to keep sources and destinations in sync while minimizing the impact of service downtime and migration.
Backup Migration
For security reasons, it is often necessary to hide the real IP address of your database. Migrating data through dedicated connections is an option, but it is expensive. DRS supports backup migration, which allows you to export data from your source database for backup and upload the backup files to OBS. Then, you can restore the backup files to the destination database to complete the migration. This method lets you migrate data without exposing your source databases to the Internet.
You can use backup migration when you want to migrate on-premises databases to the cloud.
Without connecting to your sources, DRS can help you complete data migration.
Real-Time Synchronization
Real-time synchronization refers to the real-time flow of key service data from sources to destinations while consistency of data can be ensured.
It is different from migration. Migration means moving your overall database from one platform to another. Synchronization refers to the continuous flow of data between different services.
You can use real-time synchronization in many scenarios such as real-time analysis, report system, and data warehouse environment.
Real-time synchronization is mainly used for synchronizing tables and data. It can meet various requirements, such as many-to-one, one-to-many synchronization, dynamic addition and deletion of tables, and synchronization between tables with different names.
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