In today’s IT landscape, characterized by increasingly complex and distributed infrastructures, Azure Arc represents a strategic solution to address the challenges of multi-cloud and hybrid management. Azure Arc is an extension of the Microsoft Azure platform that allows managing, governing, and securing distributed resources across on-premises, multi-cloud, and edge environments, ensuring a unified experience. With Azure Arc, hybrid infrastructures can be managed as native Azure resources, simplifying governance and automation. Furthermore, Azure Arc-enabled services allow Azure workloads to be deployed and executed outside the public cloud while maintaining centralized control. This article explores how Azure Arc for SQL Server enables organizations to modernize the governance and management of their databases without necessarily migrating to the cloud.
Azure Arc for SQL Server
Azure Arc for SQL Server extends Azure capabilities to SQL databases residing on-premises, in other clouds, or edge environments. This solution allows managing, securing, and governing SQL Server just like a native Azure database without requiring data migration to the cloud. Thanks to this technology, businesses can ensure high performance and security while adapting to their specific needs. Additionally, it enables organizations to adopt a continuous modernization strategy, leveraging advanced cloud tools to enhance SQL Server database lifecycle management.
![](https://i0.wp.com/francescomolfese.it/wp-content/uploads/2025/02/2025_02_15_AzureArc_SQLSever-01.png?resize=625%2C586&ssl=1)
Figure 1 – Extending Azure Services to SQL Server
Specifically, Azure Arc connects SQL servers to the Azure control plane, enabling:
- Monitoring and managing SQL instances from a single interface, regardless of their location.
- Applying governance policies uniformly across all databases, ensuring compliance and security.
- Integrating advanced features such as Defender for SQL Server and Azure Policy to enhance data protection.
- Automating updates and patching, reducing security vulnerability risks.
Enabling SQL Server with Azure Arc
The following procedure connects SQL Server instances to the Azure control plane:
1. Script Generation and Execution on the Server
- A configuration script must be executed on the virtual or physical machine hosting SQL Server.
- This script installs the necessary components to integrate the server with Azure Arc.
2. Creating Local Services
- The Arc agent is installed, allowing the discovery of SQL Server instances and integration with Azure services.
- The Azure extension for SQL Server is enabled to provide advanced management features.
3. Resource Registration in Azure
- The server is registered as an Arc-enabled server, while each SQL instance is registered as an Arc-enabled SQL Server.
- This integration allows SQL Server to be managed as a native Azure resource while keeping the database on local or multi-cloud infrastructures.
4. Enabling the Azure Monitoring Agent
- The monitoring agent collects event logs, performance metrics, and resource usage data.
- These data can be analyzed in Azure Monitor for performance tracking and security.
5. Onboarding Scalability
- The onboarding process can be automated at scale using tools like Group Policy or System Center Configuration.
- This allows managing a large number of SQL servers with a single centralized configuration.
![](https://i0.wp.com/francescomolfese.it/wp-content/uploads/2025/02/2025_02_15_AzureArc_SQLSever-02.png?resize=625%2C503&ssl=1)
Figure 2 – SQL Server Architecture Enabled by Azure Arc
Key Benefits
Azure Arc for SQL Server is ideal for organizations looking to keep their databases on-premises or in hybrid environments while leveraging Azure’s power and advanced management tools without fully migrating to the cloud. The key benefits include:
- Simplified Management – A single Azure interface enables centralized governance of distributed databases.
- Enhanced Security – Advanced governance, encryption, and access management features protect data uniformly.
- High Reliability – Support for High Availability and Disaster Recovery (HA/DR) ensures operational continuity.
- Seamless Integration with Azure – Direct connection with tools like Defender for SQL, Azure Monitor, and Purview.
- Reduced Downtime – Advanced automation minimizes the risk of downtime and operational disruptions.
- Improved Compliance Management – Enhanced ability to meet corporate and industry regulations.
Management Capabilities
The following image compares management capabilities across three SQL Server environments:
- Traditional SQL Server (on customer infrastructure or third-party cloud)
- Azure Arc-enabled SQL Server
- SQL Server on an Azure Virtual Machine
![](https://i0.wp.com/francescomolfese.it/wp-content/uploads/2025/02/2025_02_15_AzureArc_SQLSever-03.png?resize=625%2C325&ssl=1)
Figure 3 – Management Capabilities Comparison
Key Differences and Benefits of Azure Arc for SQL Server
Traditional SQL Server lacks most advanced management and security features, such as automatic patching, backup, monitoring, and compliance. Azure Arc introduces numerous advanced capabilities for SQL Server on-premises or in other clouds, including:
- Inventory Management
- Automated Patching and Backup
- Monitoring and Security with Defender for SQL Server
- TDE Encryption with Azure Key Vault
- Point-in-time Restore
- HA/DR Management and Cluster-aware Updates
SQL Server on an Azure VM offers a high level of functionality, including integration with Azure Policy, long-term backup, and Purview Premium—some of which are planned as future features for Arc.
Conclusion
Azure Arc for SQL Server represents a strategic solution for organizations seeking to modernize their database management without necessarily migrating to the cloud. By integrating with the Azure control plane, this technology provides a unified and centralized view of all SQL Server instances, regardless of their location, simplifying governance, security, and compliance operations.