A. Identify a potential downtime window and stop the application calls to the source DB instance.
B. Ensure that automatic backups are enabled for the source DB instance. Most Voted
C. Ensure that the source DB instance is a Multi-AZ deployment with Always ON Availability Groups. Most Voted
D. Ensure that the source DB instance is a Multi-AZ deployment with SQL Server Database Mirroring (DBM).
E. Modify the read replica parameter group setting and set the value to 1.

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