1Z0-1067-25 Question 68
Single answerYour organization runs a mission-critical ecommerce application on Oracle Cloud Infrastructure (OCI), currently deployed in a single region with multiple Availability Domains for high availability. Due to a recent compliance mandate, the application must remain operational even if the entire primary region becomes unavailable, and data loss must be minimized. Which approach best meets these requirements while reducing operational overhead for ongoing maintenance?
- A
Use cross-region Autonomous Data Guard for the database, replicate compute resources to a secondary region using instance configurations, and configure a global load balancer for automated failover.
- B
Continue running all resources in a single region but upgrade to a multi-AD deployment for compute and block storage, relying on weekly backups to respond to a region-wide disaster.
- C
Implement region-level backups to Object Storage once every 24 hours and manually provision new compute instances in a second region only when the primary region fails.
- D
Set up multiple Availability Domains in the same region and rely on a custom script to migrate databases and compute resources if the region becomes unavailable.
Show answer and explanation
Correct answer: A
Explanation
To address regional outages, a multi-Region architecture is essential. Cross-region Autonomous Data Guard keeps the standby database nearly in sync with the primary, reducing Recovery Point Objective (RPO) and ensuring minimal data loss. Replicating compute resources to a secondary region simplifies failover when combined with a global load balancer. For more information, refer to Oracle� documentation on Disaster Recovery and cross-region strategies for OCI.
- A. Correct.
Correct. Using cross-region Autonomous Data Guard ensures near real-time data replication with minimal data loss, while instance configurations enable automated replication of compute resources. A global load balancer helps to seamlessly direct traffic to the secondary region in case of a primary region outage. This setup meets the requirement for minimal downtime and data loss with relatively low maintenance overhead.
- B. Incorrect.
Incorrect. Expanding to multiple Availability Domains within the same region improves high availability but does not protect against a region-wide outage. Weekly backups are insufficient for ensuring minimal data loss in a disaster scenario, and they introduce significant RTO/RPO gaps.
- C. Incorrect.
Incorrect. Relying solely on daily or less frequent backups and manual provisioning in a secondary region can lead to unacceptable recovery times and potential data loss. You also face operational complexity when spinning up infrastructure under pressure during an incident.
- D. Incorrect.
Incorrect. Multiple ADs in the same region provide availability within that region, but they do not address a region-wide failure. A custom script to migrate everything if the entire region is down is manual, prone to errors, and may not meet the near-continuous service requirement.