“Prevent Page Corruption & Restore SQL DB Backup from On-prem to Azure SQL MI: A Step-by-Step Guide”

How to Prevent Page Corruption Scenarios While Restoring SQL DB Backup from On-Prem to Azure SQL MI
Introduction
The cloud has become an important part of the IT industry, with many organizations now utilizing cloud-based services for their data storage and computing needs. However, when it comes to migrating an existing on-premises SQL Server database to Azure SQL Managed Instance, there are a few complexities that need to be taken into consideration. One of these complexities is the potential for page corruption when restoring a SQL Server backup. In this article, we’ll discuss what page corruption is and how to prevent it when restoring a SQL Server backup from on-premises to Azure SQL Managed Instance.

What is Page Corruption?
Page corruption occurs when data stored in a database becomes corrupted and unusable. This can be caused by a variety of different factors, such as hardware failure, software bugs, and even user errors. Page corruption can cause errors when attempting to access the data, as well as data loss. It is important to be aware of page corruption and how to prevent it when restoring a SQL Server backup.

How to Prevent Page Corruption in SQL Server Backups
When restoring a SQL Server backup to Azure SQL Managed Instance, there are a few steps that need to be followed to ensure that the data is not corrupted. The first step is to run a full backup on the source system. This will ensure that all of the data is captured in the backup and that it can be restored successfully. Once the backup is complete, the user should verify the integrity of the backup before restoring it. This can be done by running the CHECKSUM command on the backup file.

The next step is to restore the backup to a staging instance on Azure SQL Managed Instance. This will ensure that the data can be tested and verified before being put into production. Once the backup is restored, the user should run a series of tests to ensure that the data is not corrupted and that it can be accessed successfully. If any issues are found, the user should restore the backup again to make sure that the data is not corrupted.

The final step is to run a DBCC CHECKDB command on the staging instance to check for any page corruption. This command will check all of the pages of the database for any errors and will report any issues that it finds. If any page corruption is found, the user should restore the backup again to make sure that the data is not corrupted.

Conclusion
Page corruption can be a serious issue when restoring a SQL Server backup to Azure SQL Managed Instance. It is important to be aware of the potential for page corruption and to take the necessary steps to prevent it. By running a full backup on the source system, verifying the integrity of the backup, restoring it to a staging instance, and running a DBCC CHECKDB command, users can ensure that their data is not corrupted and can be restored successfully.
References:
How to prevent Page corruption scenarios while restoring SQL DB backup from On-prem to Azure SQL MI

1. Backup and Restore SQL DB from Azure On-Premise
2. Avoid