We are pleased to announce preview of Microsoft Azure Database Migration Service hybrid mode, which manages migration using a migration worker hosted on-premises along with an instance of Azure Database Migration Service running in the cloud (the “cloud service”) to manage database migrations. Azure Database Migration Service hybrid mode is especially useful for scenarios in which there is a lack of site-to-site connectivity between the on-premises network and Azure or if there is limited site-to-site connectivity bandwidth.
Use Azure Database Migration Service hybrid mode if your network security policies prevent Network Security Group (NSG) rules allowing inbound traffic for the cloud instance of Azure Database Migration Service.
You can use Azure Database Migration Service in hybrid mode to migrate on-premises databases to Azure in five simple steps:
- Create an instance of Azure Database Migration Service in hybrid mode.
- Download, install, and set up the Azure Database Migration Service hybrid worker in your on-premises network.
- Create a migration project and start online migration using the hybrid mode instance of Azure Database Migration Service set up in the first step.
- Monitor migration.
- Perform the cutover when you are ready.
Currently, Azure Database Migration Service running in hybrid mode supports SQL Server migrations to:
- Azure SQL Database managed instance with near zero downtime (online).
- Azure SQL Database single database with some downtime (offline).
We will add support for additional migration scenarios in future releases.
For additional information about this new functionality, see the tutorial Get started with Azure Database Migration Service -hybrid mode and perform friction free migrations.