Doc Menu

TiDB Data Migration Documentation

TiDB Data Migration (DM) is an integrated data migration task management platform that supports the full data migration and the incremental data replication from MySQL/MariaDB into TiDB. It can help to reduce the operations cost and simplify the troubleshooting process.

What's new in DM v2.0:

  • High availability of data migration tasks. The data migration task can run normally even when some DM-master or DM-worker nodes fail.
  • Sharding DDL support in the optimistic mode. In this mode, migration latency can be reduced in some scenarios and you can make A/B changes in the upstream database.
  • Better usability, including the new error handling mechanism and the easier-to-read error messages and error handling suggestions.
  • TLS support for connections between the upstream and the downstream, and for connections between DM components.
  • Support for migrating data from MySQL 8.0 (experimental).