PAS-C01 Design of SAP Workloads on AWS Practice Question
An SAP system on AWS uses a shared file system for /sapmnt and /usr/sap/trans mounted from an EC2 instance running NFS. The NFS server experiences a failure causing downtime for all SAP application servers. The company wants a highly available shared file system with automatic failover. The budget is limited, and the company prefers a fully managed solution. Which AWS service should the company use?
⚠ Common exam trap
A common trap in AWS SAP exams is that candidates might choose Amazon EBS with a cluster file system (Option C) thinking it provides high availability, but they overlook that it still requires manual orchestration and is not a fully managed service, unlike Amazon EFS.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon EFS
Amazon EFS provides a fully managed, highly available, and durable NFS file system that supports automatic failover across multiple Availability Zones. It is the ideal choice for the SAP /sapmnt and /usr/sap/trans shared file system because it eliminates the single point of failure of a self-managed NFS server, requires no manual failover configuration, and offers a pay-as-you-go model that fits a limited budget.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon FSx for Windows File Server
Why it's wrong here
FSx for Windows is SMB-based and not supported for SAP on Linux.
- ✓
Amazon EFS
Why this is correct
EFS is a managed NFS file system that provides high availability across AZs.
- ✗
Amazon EBS with a cluster file system
Why it's wrong here
EBS volumes cannot be attached to multiple instances across AZs without additional clustering.
- ✗
Amazon S3 with s3fs-fuse
Why it's wrong here
S3 is not a POSIX-compliant file system and s3fs-fuse is not recommended for SAP.
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