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Zorluk: KolayMulti-AZ, Multi-Region Architectures and Disaster Recovery (DR)

A digital music distribution company hosts its core streaming platform in a primary AWS Region. The architecture consists of Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer, and an Amazon Aurora MySQL database. The company wants to set up a disaster recovery (DR) solution in a secondary AWS Region with a Recovery Time Objective (RTO) of 15 minutes and a Recovery Point Objective (RPO) of 5 minutes, while minimizing ongoing infrastructure costs.

Which combination of actions should the solutions architect implement to meet these requirements at the lowest cost? (Select TWO.)

  1. Configure an Amazon Aurora Global Database with the primary database cluster in the primary Region and a secondary database cluster in the secondary Region.Cevap
  2. Deploy a Pilot Light environment in the secondary Region with an Auto Scaling group set to a minimum capacity of zero, and scale it up during a failover event.Cevap
  3. C
    Configure an Amazon Route 53 latency routing policy to route traffic between Regions without configuring health checks.
  4. D
    Back up the database daily to Amazon S3 Glacier Flexible Retrieval in the primary Region and copy the archives to the secondary Region.
  5. E
    Configure a standard Amazon RDS MySQL Multi-AZ deployment and use a read replica in the secondary Region as the main automatic failover target.

Cevap

Configure an Amazon Aurora Global Database with a secondary cluster in the secondary Region, and deploy a Pilot Light environment in the secondary Region with an Auto Scaling group minimum capacity of zero.
The correct combination implements Amazon Aurora Global Database for sub-second cross-region data replication (satisfying the 5-minute RPO) and a Pilot Light environment in the secondary Region with compute resources set to a minimum capacity of zero (satisfying the 15-minute RTO at the lowest cost).

Adım Adım Çözüm

1
Analyze the RPO requirement of 5 minutes to determine the database replication strategy.
Amazon Aurora Global Database provides sub-second cross-region replication, which easily satisfies the 5-minute RPO requirement.
Traditional backups or slower replication methods cannot meet a 5-minute recovery point objective.
2
Analyze the RTO requirement of 15 minutes and the goal of minimizing costs to determine the compute failover strategy.
A Pilot Light environment with an Auto Scaling group capacity set to zero ensures no running compute costs in the recovery Region while permitting new instances to spin up within 15 minutes.
A Warm Standby requires running active instances, which increases ongoing costs, while a Pilot Light meets both the recovery time and low-cost objectives.

Anahtar Kavram

Disaster Recovery (DR) strategies balancing RTO, RPO, and cost using Aurora Global Database and Pilot Light deployments.
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Multi-AZ, Multi-Region Architectures and Disaster Recovery (DR)

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