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To learn more about potential blocking issues, see Limitations for Stretch Database. For more info, see Manage Retention of Historical Data in System-Versioned Temporal Tables. If you use the temporal table feature of SQL Server, use Stretch Database to migrate all or part of the associated history table to cost-effective storage in Azure. These tables may contain more than a billion rows. Stretch Database targets transactional databases with large amounts of cold data, typically stored in a few tables. What kind of databases and tables are candidates for Stretch Database?
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I can't back up or restore such large tables within the SLA. I want to find a way to save money on storage. I have to keep buying and adding more storage. I have apps, including older apps, that I don't want to update. My users say that they want access to cold data, but they only rarely use it. The size of my tables is getting out of control. I have to keep transactional data for a long time. If you can make the following statements, Stretch Database may help to meet your requirements and solve your problems. You can pause data migration to troubleshoot problems on the local server or to maximize the available network bandwidth. A dynamic management view provides the status of migration. It also has retry logic to handle connection issues that may occur during migration. Stretch Database ensures that no data is lost if a failure occurs during migration. There is a small amount of latency for remote queries, but you only encounter this latency when you query the cold data. You continue to have seamless access to both local and remote data, even during data migration. You don't have to change existing queries and client apps. If your table contains both hot and cold data, you can specify a filter function to select the rows to migrate. If you store cold data in a separate table, you can migrate the entire table. Row Level Security (RLS) and other advanced SQL Server security features also work with Stretch Database to protect your data.Īfter you enable Stretch Database for a SQL Server instance and a database, and select at least one table, Stretch Database silently begins to migrate your cold data to Azure. SQL Server's Always Encrypted provides encryption for your data in motion. Enjoy peace of mind as you stretch your most important applications securely to the cloud. Keeps your data secure even during migration. Azure storage can be 80% less expensive than adding to on-premises SSD. Your on-premises storage needs are greatly reduced. Backups for the cloud portion of your data run automatically. Backups for your on-premises data run faster and finish within the maintenance window. Reduce on-premises maintenance and storage for your data. Streamlines on-premises data maintenance. And, Stretch Database doesn't require any changes to existing queries or applications - the location of the data is transparent to the application. The entire table is always online and queryable. You set the policy that determines where data is stored, and SQL Server handles the data movement in the background. Access your SQL Server data seamlessly regardless of whether it's on-premises or stretched to the cloud. Visit SQL Server Stretch Database Pricing for details.ĭoesn't require changes to queries or applications. You choose the pricing tier and configure settings in the Azure portal to maintain control over price and costs. Benefit from the low cost of Azure rather than scaling expensive, on-premises storage. You can provide longer data retention timelines without breaking the bank for large tables like Customer Order History. Unlike typical cold data storage, your data is always online and available to query. Stretch warm and cold transactional data dynamically from SQL Server to Microsoft Azure with SQL Server Stretch Database.
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Stretch Database provides the following benefits:Ĭost-effective availability for cold data. What are the benefits of Stretch Database? If you just want to get started with Stretch Database right away, see Get started by running the Enable Database for Stretch Wizard. Stretch Database migrates your cold data transparently and securely to the Microsoft Azure cloud. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. This feature will be removed in a future version of Microsoft SQL Server. Stretch Database is deprecated in SQL Server 2022 (16.x) Preview.