![]() You can migrate single databases or at scale using PowerShell and Azure CLI. Powered by the Azure Database Migration service, the Azure SQL Migration extension for Azure Data Studio helps you to assess your database requirements to understand your migration readiness, get the right-sized SKU recommendations for Azure resources, and migrate your SQL Server database to Azure. We recommend the following migration tools: TechnologyĪzure SQL Migration extension for Azure Data Studio Your compute requirements are much lower than a managed instance offers (one vCore, for example), and database consolidation is not an acceptable option.You need to stay at a specific version of SQL Server (2012, for example).You have strict dependency on features that are still not supported, such as FileStream/FileTable, PolyBase, and cross-instance transactions.You require direct access to the operating system or file system, such as to install third-party or custom agents on the same virtual machine with SQL Server.If one of the following conditions applies to your business, consider moving to a SQL Server virtual machine (VM) instead: Your business might have requirements that make SQL Server on Azure Virtual Machines a more suitable target than Azure SQL Managed Instance. Learn more about creating new and configuring existing networks.Īnother key consideration in the selection of the target service tier in Azure SQL Managed Instance (General Purpose versus Business Critical) is the availability of certain features, like In-Memory OLTP, that are available only in the Business Critical tier. You can choose compute and storage resources during deployment and then change them afterward by using the Azure portal, without incurring downtime for your application.Īny discrepancy in the virtual network requirements for managed instances can prevent you from creating new instances or using existing ones. Use the baseline throughput to preallocate the size of the data and log files to achieve expected I/O performance.Use the baseline I/O latency of the file subsystem to choose between the General Purpose (latency greater than 5 ms) and Business Critical (latency less than 3 ms) service tiers.Use the memory usage baseline to choose a vCore option that appropriately matches your memory allocation.It might be necessary to scale resources to match the hardware configuration characteristics. Use the CPU usage baseline to provision a managed instance that matches the number of cores that your instance of SQL Server uses.The following general guidelines can help you choose the right service tier and characteristics of SQL Managed Instance to help match your performance baseline: To learn more, see Get right-sized Azure recommendation for your on-premises SQL Server database(s) The extension collects performance data from your source SQL Server instance to provide right-sized Azure recommendation that meets your workload's performance needs with minimal cost. You can use the Azure SQL migration extension for Azure Data Studio to get right-sized Azure SQL Managed Instance recommendation. For more information, see the Key causes of performance differences between SQL Managed Instance and SQL Server blog entry. Overhead caused by some features in SQL Managed Instance can't be disabled. Instance-level objects required for your application, including logins, credentials, SQL Agent jobs and operators, and server-level triggersĪzure SQL Managed Instance guarantees 99.99 percent availability, even in critical scenarios.All databases that need to be colocated to the same instance.Carefully plan to include the following in your migration process: One of the key benefits of migrating your SQL Server databases to SQL Managed Instance is that you can choose to migrate the entire instance or just a subset of individual databases. Acceptable business downtime during the migration process. ![]() The key factors to consider when you're evaluating migration options are: It offers complete isolation of your instances with native virtual network support.īe sure to review the SQL Server database engine features available in Azure SQL Managed Instance to validate the supportability of your migration target. ![]() SQL Managed Instance enables you to move your on-premises applications to Azure with minimal application or database changes. OverviewĪzure SQL Managed Instance is a recommended target option for SQL Server workloads that require a fully managed service without having to manage virtual machines or their operating systems.
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