A enterprise team is performing an operational disaster recovery (DR) drill to validate business continuity for an application deployed across two Google Cloud regions. The failover plan requires redirecting network traffic to the secondary region and ensuring database availability. Which of the following execution steps are necessary to successfully complete this regional failover procedure? (Select TWO.)
- Promote the cross-region database read replica in the secondary region to a standalone primary database.Answer
- Update DNS records or Global Load Balancer URL maps to route production incoming user traffic to the secondary region backend.Answer
- CConfigure VPC Network Peering transitively through an intermediate VPC network so the secondary region can reach non-peered resources.
- DRely on standard compute quota without submitting quota increase requests, assuming secondary region compute capacity auto-expands beyond regional quotas.
Answer
The necessary steps for regional failover execution are promoting the cross-region read replica in the secondary region to become a standalone primary database, and updating DNS records or load balancer routing to direct production traffic to the secondary region.
Executing a disaster recovery failover to a secondary region requires promoting passive data components (such as cross-region read replicas) to active write mode and updating global ingress routing mechanisms (such as DNS TTL policies or Global Load Balancing URL maps) to direct traffic toward active infrastructure.
Step-by-Step Solution
Key Concept
Disaster Recovery Failover Execution and Traffic Rerouting