PAS-C01 Amazon EFS Practice Question
A company is migrating an SAP ERP system to AWS. The SAP application servers use a shared /sapmnt filesystem. Which AWS storage solution is most suitable for this shared filesystem with high availability?
⚠ Common exam trap
The /sapmnt filesystem must be accessible from multiple application servers simultaneously. While EBS Multi-Attach can technically attach a volume to multiple instances, it is not recommended for SAP workloads due to limited concurrency and lack of managed high availability. EFS is the correct choice.
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) is correct because Amazon EFS is a managed NFS filesystem that provides high availability and can be shared across multiple EC2 instances, making it suitable for the shared /sapmnt filesystem required by SAP. Option A (Amazon S3) is wrong because S3 is object storage, not a POSIX-compliant filesystem, and cannot be mounted as a shared filesystem. Option B (Amazon FSx for Windows File Server) is incorrect because SAP typically runs on Linux, and FSx for Windows is designed for Windows workloads. Option C (Amazon EBS with Multi-Attach) is not ideal because EBS Multi-Attach has limitations (max 16 instances, single Availability Zone) and is not as scalable or resilient as EFS for this use case.
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 S3 with a mount point
Why it's wrong here
S3 is not a POSIX filesystem.
- ✗
Amazon FSx for Windows File Server
Why it's wrong here
FSx for Windows is for Windows, not Linux.
- ✗
Amazon EBS with Multi-Attach enabled
Why it's wrong here
EBS Multi-Attach has limitations and is not recommended for SAP.
- ✓
Amazon EFS
Why this is correct
EFS provides a shared NFS filesystem with high availability.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.