PAS-C01 Amazon EFS Practice Question
Which TWO AWS services can be used to provide shared storage for SAP systems running on multiple EC2 instances?
⚠ Common exam trap
A common trap is assuming that only Amazon FSx for NetApp ONTAP can serve as shared storage for SAP, but Amazon EFS is also a valid option. Candidates may incorrectly choose S3 (object storage, not a file system) or EBS (block storage attached to a single instance) or EC2 Instance Store (ephemeral). The correct choices are both EFS and FSx for ONTAP because both provide network-attached, concurrent file access to multiple EC2 instances.
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 FSx for NetApp ONTAP
Amazon FSx for NetApp ONTAP provides a fully managed, shared file system with NFS and SMB support, offering features like deduplication and snapshots ideal for SAP clustered deployments. Amazon EFS also provides a shared NFSv4.1 file system accessible from multiple EC2 instances concurrently, making it suitable for SAP workloads that require shared storage. Both services enable shared storage for SAP systems running on multiple instances, while EC2 Instance Store is ephemeral, S3 is object storage, and EBS volumes are single-instance attached.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
EC2 Instance Store
Why it's wrong here
Instance store is ephemeral and local to one instance.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a file system.
- ✗
Amazon EBS
Why it's wrong here
EBS volumes can only attach to one instance.
- ✓
Amazon FSx for NetApp ONTAP
Why this is correct
FSx for ONTAP provides shared NFS/SMB storage.
- ✓
Amazon EFS
Why this is correct
EFS is a scalable NFS file system for Linux.
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.