1Z0-1123-25 Question 108
Select 2Your organization operates several critical Compute Instances in the us-ashburn-1 region, each with attached Block Volumes containing application data. You have also created custom images for launching servers quickly in that region. Due to new compliance requirements, you must migrate these workloads to the uk-london-1 region and ensure that the data in the new region is nearly in sync with the source. Which two approaches should you implement to achieve the migration with minimal downtime?
- A
Use Block Volume cross-region copy to replicate the volumes to uk-london-1, then launch new instances in uk-london-1 using the replicated volumes and imported custom images.
- B
Select 'Move Resource' from the Console for the running Compute Instances in us-ashburn-1 to directly transfer them to uk-london-1.
- C
Export custom images to an Object Storage bucket in us-ashburn-1, replicate them to uk-london-1, and then re-import the images in the target region.
- D
Attach the Block Volumes in us-ashburn-1 directly to instances in uk-london-1 over a VPN connection to minimize data copies.
Show answer and explanation
Correct answers: A, C
Explanation
To migrate workloads to another region, you must replicate both the block volumes and the custom images. Block Volume cross-region copy provides a straightforward way to copy data to a target region, while exporting and replicating custom images ensures you can launch the same OS and application configuration. Oracle documentation for cross-region block volume replication and custom image export/import supports this approach. Refer to the latest OCI documentation on Block Volume Replication and Custom Image Management for detailed steps and best practices.
- A. Correct.
Correct. Using the native cross-region copy feature for Block Volumes lets you replicate data to the target region and keep it relatively synchronized. You may also copy or import your custom images into uk-london-1, which allows you to spin up new instances there using the same images you had in us-ashburn-1.
- B. Incorrect.
Incorrect. While you can move certain resources (like compartments) between regions, there is no direct 'Move Resource' option for running Compute Instances. You must manually recreate instances in the target region rather than move them as-is.
- C. Correct.
Correct. Exporting or copying custom images to an Object Storage bucket in us-ashburn-1, then replicating that bucket to uk-london-1 and re-importing the images, is a recommended approach. It lets you preserve the same OS configuration and software setup across regions.
- D. Incorrect.
Incorrect. You cannot attach a Block Volume in one region directly to a Compute Instance in another region. Block Volumes are region-bound, so you must recreate or replicate them in the target region rather than attach them remotely.