1Z0-1123-25 Question 105
Select 3Your organization wants to migrate a production environment from the Phoenix region to the Ashburn region with minimal downtime. This environment includes several Compute instances (with custom images), Block Volumes containing application data, and a mission-critical Oracle Database. Which three approaches should you implement to ensure seamless cross-region migration and near-continuous application availability?
- A
Use Block Volume backups from the source region and restore them in the target region to replicate storage asynchronously.
- B
Create a custom image from each Compute instance in the source region, then import those images into the target region for consistent Compute configurations.
- C
Configure Data Guard across the two regions for your Oracle Database to synchronize data in near real-time and minimize downtime.
- D
Shut down all Compute instances in the source region to ensure data consistency, then manually recreate the same resources in the target region.
Show answer and explanation
Correct answers: A, B, C
Explanation
To migrate workloads with minimal downtime between Oracle Cloud Infrastructure regions, it is best to leverage OCI's cross-region replication features. You can create Block Volume backups in the source region and restore them in the target region, ensuring data consistency across environments. For Compute, exporting and importing custom images helps you maintain consistent OS and application configurations. Meanwhile, setting up Data Guard ensures near real-time replication for Oracle Database workloads, significantly reducing downtime. For more details on cross-region backups and Data Guard configurations, refer to Oracle's official documentation for Block Volume backups and Data Guard.
- A. Correct.
Correct. Using Block Volume backups is an established method to replicate Block Volumes across OCI regions, allowing asynchronous data transfer and reducing downtime during migration.
- B. Correct.
Correct. Exporting custom images from one region and importing them into another ensures consistent configurations for Compute instances and eases the migration process.
- C. Correct.
Correct. Configuring Data Guard between your source and target region provides near real-time replication of your Oracle Database, which is essential for high availability and minimal downtime.
- D. Incorrect.
Incorrect. Shutting down source resources and recreating them manually is time-consuming and risks extended downtime. It does not align with minimal disruption or best practices for cross-region workload migration.