Data Transmission Service

A database-orientated data migration, cross-instance data synchronization and incremental data update subscription service


TencentDB Service for Transmission, also known as Data Transfer Service (DTS), provides database-oriented data migration, synchronization and subscription services and supports cross-instance continuous data replication, helping you securely and easily migrate your database onto the cloud. The binlog-based data subscription feature enables you to stream data updates in the database to a data warehouse in real time. Moreover, DTS helps you easily migrate databases without interrupting your business and build high-availability database architecture for cross-region disaster recovery using real-time synchronization tunnels. By taking care of complex data interaction tasks, it lets you focus on business development.


Data Synchronization

DTS helps you migrate your databases to TencentDB for MySQL with zero downtime throughout the entire process. All data generated during migration of the source database is synced to the target database in real time, allowing the source database to continue to provide services during migration. After data replication, the source database remains synced with the target database so that you can freely select the service switchover time.

High Transfer Performance

DTS uses high-spec servers to ensure superior transfer performance of each migration and synchronization linkage. In terms of data migration, the underlying layer of DTS employs a variety of performance optimization measures that significantly improve the transfer performance of DTS as compared with traditional data migration tools.

Automatic Failure Recovery

DTS features extremely high availability, with each of its nodes possessing high failure recovery capabilities within seconds and outstanding self-healing capabilities. Featuring high reliability, DTS guarantees data consistency when migrating your data to the cloud.

Visualized Operations

DTS does not require any separate drivers, applications or major changes to the source database. You can start data transfer right away with just a few simple steps in Tencent Cloud's visualized management interface.

Fast and Simple Setup

You can set up a migration task in just minutes in the console, where you can define various parameters for the migration task, including the links to the source and target databases, migration type and objects.


Unlike traditional data migration and synchronization tools, DTS is compatible with a variety of network environments and provides various features such as incremental data update subscription, hot database migration and data synchronization.
Hot Database Migration

DTS supports non-stop migration, minimizing the impact of database downtime on the business caused by the migration process.


Remote Disaster Recovery of Cloud Databases


If the business is deployed in a single region, services may be unavailable due to incidents such as power outages and network disconnections, and data recovery time cannot be estimated.


DTS can provide disaster recovery sync for disaster recovery instances in the cloud database based on a direct connection to Tencent's private network. The disaster recovery architecture allows for mutual redundancy between data centers in different regions. When a data center is faulty or fails to provide services due to force majeure, another data center can quickly take over. The optimization of database replication via DTS significantly reduces primary/secondary sync delay and minimizes the risk of data loss resulting from sync delay in disasters.

Database Migration to the Cloud


While many clients hope to continue their services during system migration, the consistency of the migrated data cannot be guaranteed without stopping the services during migration.


The data migration function offered by DTS provides a non-stop migration solution. During the migration process, replication of incremental data updates ensures the consistency of migrated data, allowing the source database to continue providing services externally and minimizing the impact of the cloudification process on your business. You can easily set up data migration in just a few simple steps.

Disaster Recovery for Local IDCs


If a local IDC is being used as a business center, services may become unavailable due to a regional failure.


DTS supports data sync in cases where a local IDC serves as the service center and Tencent Cloud serves as the disaster recovery center. By using this feature and the ready-to-use cloud service, you can easily implement disaster recovery for a local IDC without having to invest a lot in infrastructure in advance.

Data Archiving and Storage


By leveraging the data subscription feature of DTS, you can stream incremental data updates in the cloud database to the archival database or the data warehouse in real time.


Data Transfer Service (DTS) is currently free of charge. We will inform all users in advance when we decide to start charging for this service.