AWS Certified SAP on AWS – Specialty (PAS-C01) — Question 80

An SAP engineer is designing an SAP S/4HANA high availability architecture on Linux Amazon EC2 instances in two Availability Zones. The SAP engineer needs to create a solution to achieve high availability and consistency for /usr/sap/trans end /usr/sap/file systems.

Which solution will meet these requirements with the MOST reliability?

Answer options

• A. Set up an NFS server on one of the EC2 instances.
• B. Use Amazon Elastic File System (Amazon EFS).
• C. Use the EC2 local instance store.
• D. Use Amazon Elastic Block Store (Amazon EBS) Multi-Attach.

Correct answer: B

Explanation

The correct answer is B, as Amazon EFS provides a fully managed, scalable, and highly available file storage service that can be accessed by multiple EC2 instances simultaneously, ensuring data consistency and high availability. Option A is less reliable because an NFS server on a single EC2 instance can become a single point of failure. Option C does not provide high availability as local instance stores are ephemeral and tied to the specific instance. Option D, while useful for attaching to multiple instances, does not offer the shared file system functionality needed for the specified file paths.