An enterprise application deployed on Google Cloud requires a disaster recovery (DR) failover validation procedure that adheres to an RTO of 1 hour and an RPO of 5 minutes. During a recent DR validation exercise, automated failover to the secondary region failed because Compute Engine instance provisioning exceeded default regional quota limits. Which validation procedure should be established to ensure reliable DR failover execution in future drills?
- Include automated pre-drill verification of target regional resource quotas and proactively request quota limit increases prior to conducting failover testing.Cevap
- BDepend on Managed Instance Group autoscaling to automatically request compute quota increases from Google Cloud during the failover event.
- CTransition the secondary environment to a cold-standby strategy using Cloud Storage backups to eliminate the need for reserved compute quotas.
- DMigrate the backend database to Cloud Spanner so that regional compute quotas in the recovery region are automatically increased during failover.
Cevap
Include automated pre-drill verification of target regional resource quotas and proactively request quota limit increases prior to conducting failover testing.
Pre-drill quota verification ensures that the secondary region has sufficient regional resource quotas provisioned and approved before initiating failover testing. This avoids unexpected instance creation failures while maintaining compliance with RTO and RPO objectives.
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Disaster Recovery Validation and Quota Management