What is Azure Database Migration Service?
Azure Database Migration Service (DMS) is a fully managed service for migrating databases to Azure. The service supports offline and online migrations with minimal downtime.
Core Features
- Online migration with continuous replication
- Automatic schema and data conversion
- Pre-migration assessment and compatibility check
- Support for heterogeneous migrations
- Integration with Azure Migrate
Typical Use Cases
- Migration from on-premises SQL Server to Azure SQL
- Oracle to PostgreSQL migration
- MongoDB to Cosmos DB migration
Benefits
- Minimal downtime with online migration
- Automated compatibility check
- Free standard migration
- Integrated monitoring and troubleshooting
Integration with innFactory
As a Microsoft Solutions Partner, innFactory supports you with Azure Database Migration: migration planning, assessment, execution, and post-migration optimization.
Frequently Asked Questions
Which databases are supported?
SQL Server, MySQL, PostgreSQL, MongoDB, Oracle to Azure SQL, Azure Database for MySQL/PostgreSQL, Cosmos DB, and Azure SQL Managed Instance.
What is the difference between offline and online migration?
Offline: Source is unavailable during migration. Online: Continuous replication with minimal cutover downtime (seconds to minutes).
What does the service cost?
Standard tier is free. Premium tier for online migration costs approx. 0.40 EUR per vCore-hour.
Can I migrate from on-premises?
Yes, via VPN or ExpressRoute connection. For large data volumes, Azure Data Box is recommended for the initial transfer.
