1Z0-1123-25 Question 119
Single answerYour organization runs a critical transaction-processing application on an OCI Compute instance in the Phoenix region. The application uses two OCI Block Volumes for storing data. You need to ensure that data is continuously replicated to the Ashburn region for disaster recovery with minimal RPO and without detaching volumes from the running instance. Which approach should you take?
- A
Schedule cross-region block volume backups in Phoenix and manually restore them in Ashburn on a daily basis.
- B
Configure OCI Block Volume Replication to replicate volumes asynchronously to the Ashburn region without service interruption.
- C
Detach the volumes from the Phoenix instance, copy them to Ashburn, and reattach them to minimize data loss.
- D
Use multiple block volume attachments across both regions simultaneously to keep the data synchronized in real time.
Show answer and explanation
Correct answer: B
Explanation
Block Volume Replication in OCI is an asynchronous, ongoing replication process that helps maintain up-to-date copies of block volumes in a remote region. It is designed for durability and minimal RPO, allowing mission-critical applications to remain online while the volumes are continuously replicated. Refer to Oracle Cloud Infrastructure documentation on Block Volume Replication for step-by-step instructions and best practices for disaster recovery designs.
- A. Incorrect.
Option 1 is incorrect because relying on daily cross-region block volume backups introduces higher RPO compared to near real-time replication. Daily backups will not continuously replicate data nor provide minimal data loss in a DR scenario.
- B. Correct.
Option 2 is correct. OCI Block Volume Replication asynchronously replicates block volumes from one region to another in near real time without requiring the volumes to be detached. This meets the requirement for minimal RPO and no application downtime.
- C. Incorrect.
Option 3 is incorrect because detaching the volumes disrupts the running application and is not necessary for setting up replication. Block Volume Replication can be configured while volumes remain attached and in use.
- D. Incorrect.
Option 4 is incorrect because OCI does not allow a single volume to be simultaneously attached in two different regions. You cannot keep block data synchronized by dual-attaching a volume across regions.