Topic 1 Question 169

AWS Certified Solutions Architect - Professional

Topic 1 Question 169
A company is running a critical stateful web application on two Linux Amazon EC2 instances behind an Application Load Balancer (ALB) with an Amazon RDS for MySQL database. The company hosts the DNS records for the application in Amazon Route 53. A solutions architect must recommend a solution to improve the resiliency of the application.

The solution must meet the following objectives:

• Application tier: RPO of 2 minutes. RTO of 30 minutes • Database tier: RPO of 5 minutes. RTO of 30 minutes

The company does not want to make significant changes to the existing application architecture. The company must ensure optimal latency after a failover.

Which solution will meet these requirements?
- Configure the EC2 instances to use AWS Elastic Disaster Recovery. Create a cross-Region read replica for the RDS DB instance. Create an ALB in a second AWS Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs. Update DNS records to point to the Global Accelerator endpoint.
- Configure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take snapshots of the EBS volumes. Configure RDS automated backups. Configure backup replication to a second AWS Region. Create an ALB in the second Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs. Update DNS records to point to the Global Accelerator endpoint.
- Create a backup plan in AWS Backup for the EC2 instances and RDS DB instance. Configure backup replication to a second AWS Region. Create an ALB in the second Region. Configure an Amazon CloudFront distribution in front of the ALB. Update DNS records to point to CloudFront.
- Configure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take snapshots of the EBS volumes. Create a cross-Region read replica for the RDS DB instance. Create an ALB in a second AWS Region. Create an AWS Global Accelerator endpoint, and associate the endpoint with the ALBs.
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コメント(7)
- 正解だと思う選択肢: A
  DRS includes EC2 instances as well not just data related as offered by DLM or Backup
  
  Q: What operating systems and applications are supported by AWS DRS? A: You can use AWS DRS to recover all of your applications and databases that run on supported Windows and Linux operating system versions. This includes critical databases such as Oracle, MySQL, and SQL Server, and enterprise applications such as SAP.
  
  AWS Elastic Disaster Recovery (DRS) vs AWS DLM vs AWS Backup
  
  You should use DLM when you want to automate the creation, retention, and deletion of EBS snapshots. You should use AWS Backup to manage and monitor backups across the AWS services you use, including EBS volumes, from a single place.
  
  👍 10
  God_Is_Love2023/03/15
- 正解だと思う選択肢: A
  its understood that others cannot meet the RTO and RPO requirements, because restore from back can take time based on the size of the data
  
  👍 4
  bititan2023/02/02
- 正解だと思う選択肢: A
  RDS Cross-region replication has the best RPO and RTO: https://aws.amazon.com/blogs/database/implementing-a-disaster-recovery-strategy-with-amazon-rds/
  
  https://docs.aws.amazon.com/prescriptive-guidance/latest/strategy-database-disaster-recovery/choosing-database.html
  
  AWS Elastic Disaster Recovery also provide the best RTO/RPO (with Warm standby and active-active) https://docs.aws.amazon.com/wellarchitected/latest/reliability-pillar/rel_planning_for_recovery_disaster_recovery.html
  
  👍 4
  dev112233xx2023/04/10
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