AWS Certified SAP on AWS – Specialty (PAS-C01) — Question 47

A company hosts an SAP HANA database on an Amazon EC2 instance in the us-east-1 Region. The company needs to implement a disaster recovery (DR) site in the us-west-1 Region. The company needs a cost-optimized solution that offers a guaranteed capacity reservation, an RPO of less than 30 minutes, and an RTO of less than 30 minutes.
Which solution will meet these requirements?

Answer options

• A. Deploy a single EC2 instance to support the secondary database in us-west-1 with additional storage. Use this secondary database instance to support QA and production. Configure the primary SAP HANA database in us-east-1 to constantly replicate the data to the secondary SAP HANA database in us-west-1 by using SAP HANA system replication with preload off. During DR, shut down the QA SAP HANA instance and restart the production services at the secondary site.
• B. Deploy a secondary staging server on an EC2 instance in us-west-1. Use CloudEndure Disaster Recovery to replicate changes at the database level from us-east-1 to the secondary staging server on an ongoing basis. During DR, initiate cutover, increase the size of the secondary EC2 instance to match the primary EC2 instance, and start the secondary EC2 instance.
• C. Set up the primary SAP HANA database in us-east-1 to constantly replicate the data to a secondary SAP HANA database in us-west-1 by using SAP HANA system replication with preload on. Keep the secondary SAP HANA instance as a hot standby that is ready to take over in case of failure.
• D. Create an SAP HANA database AMI by using Amazon Elastic Block Store (Amazon EBS) snapshots. Replicate the database and log backup files from a primary Amazon S3 bucket in us-east-1 to a secondary S3 bucket in us-west-1. During DR, launch the EC2 instance in us-west-1 based on AMIs that are replicated. Update host information. Download database and log backups from the secondary S3 bucket. Perform a point-in-time recovery.

Correct answer: A

Explanation

Option A is correct as it allows for constant data replication and supports both QA and production, ensuring quick recovery during a disaster. Option B, while effective, does not guarantee the same level of data integration for both QA and production. Option C, with preload enabled, does not meet the cost-optimization requirement, and option D involves a more complex recovery process that may not satisfy the RPO and RTO constraints as efficiently as option A.