1Z0-1123-25 Question 117
Single answerA retail company runs an Oracle database on an OCI Compute instance using multiple block volumes in the us-ashburn-1 region. To meet strict disaster recovery (DR) requirements, they need near real-time replication of these volumes to the us-phoenix-1 region without manual intervention. They also want to ensure data is always encrypted in transit and at rest. Which solution best meets these requirements?
- A
Implement a daily manual backup policy for all block volumes and copy the backups to the DR region
- B
Use OCI Block Volume Cross-Region Replication with default asynchronous replication settings
- C
Configure ephemeral NVMe storage on the local compute node and replicate data manually
- D
Rely on Oracle Data Guard to replicate the block volumes across regions
Show answer and explanation
Correct answer: B
Explanation
OCI Block Volume Cross-Region Replication provides near real-time asynchronous replication of block volumes to another region, ensuring minimal data loss and meeting stringent RPO/RTO requirements. It handles encryption automatically, both at rest and in transit, and removes the need for manual interventions like exporting or copying backups. For further details, refer to the Oracle Cloud Infrastructure documentation on Block Volume Replication.
- A. Incorrect.
Option 1: Incorrect. Manual backup policies provide snapshots at scheduled intervals, but they do not offer near real-time replication. Backups are typically taken once a day or multiple times per day, but they do not continuously synchronize changes to the DR region.
- B. Correct.
Option 2: Correct. OCI Block Volume Cross-Region Replication is an asynchronous feature designed for near real-time replication of changes across regions. It seamlessly maintains encrypted data both in transit and at rest, eliminating the need for manual intervention.
- C. Incorrect.
Option 3: Incorrect. NVMe local storage is ephemeral and cannot be directly replicated across regions. It is intended for low-latency, temporary data storage and is not suitable for long-term cross-region DR strategies.
- D. Incorrect.
Option 4: Incorrect. Oracle Data Guard is specific to databases and handles database-level replication, not general block volumes. While it ensures consistent database replication, it does not replicate arbitrary block volumes outside the database context.