- A
Amazon EFS
EFS provides a scalable NFS file system with automatic replication across AZs, ideal for /sapmnt.
- B
Amazon S3 with S3 File Gateway
Why wrong: S3 is object storage and does not fully support POSIX semantics needed by SAP.
- C
AWS Storage Gateway file gateway
Why wrong: File gateway provides NFS but is not as fully managed or scalable as EFS for this use case.
- D
Amazon EBS with multi-attach enabled
Why wrong: EBS multi-attach is limited to io1/io2 volumes and up to 16 instances, and does not provide automatic scalability.
Question 670 of 1,733
Shared Storage Options for SAP on AWS
This PAS-C01 practice question tests your understanding of technology. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An SAP system on AWS uses a shared file system (e.g., /sapmnt) that must be accessible from multiple EC2 instances. Which storage solution provides the highest availability and scalability?
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, NFS-based shared file system that is accessible from multiple EC2 instances across Availability Zones, offering high availability and automatic scalability. For SAP /sapmnt, EFS supports the required POSIX permissions and concurrent access patterns without single points of failure, unlike block storage or gateway solutions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 EFS
Why this is correct
EFS provides a scalable NFS file system with automatic replication across AZs, ideal for /sapmnt.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon S3 with S3 File Gateway
Why it's wrong here
S3 is object storage and does not fully support POSIX semantics needed by SAP.
- ✗
AWS Storage Gateway file gateway
Why it's wrong here
File gateway provides NFS but is not as fully managed or scalable as EFS for this use case.
- ✗
Amazon EBS with multi-attach enabled
Why it's wrong here
EBS multi-attach is limited to io1/io2 volumes and up to 16 instances, and does not provide automatic scalability.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose EBS with multi-attach because it seems to allow shared access, but they overlook its single-AZ limitation and the 16-instance cap, which fails the high-availability and scalability requirements for SAP.
Detailed technical explanation
How to think about this question
EFS uses the NFSv4.1 protocol and distributes data across multiple Availability Zones within a region, providing 99.99% availability for Standard storage classes. Under the hood, EFS leverages a distributed data plane that automatically scales throughput and IOPS as files are added, without requiring pre-provisioning. In a real-world SAP deployment, /sapmnt must be mounted on all SAP application servers and the central services instance, and EFS supports the required file locking and permission semantics (e.g., via NFSv4 ACLs) that Samba or gateway solutions cannot reliably match.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon EFS — Amazon EFS provides a fully managed, NFS-based shared file system that is accessible from multiple EC2 instances across Availability Zones, offering high availability and automatic scalability. For SAP /sapmnt, EFS supports the required POSIX permissions and concurrent access patterns without single points of failure, unlike block storage or gateway solutions.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on PAS-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO AWS services can be used to provide shared storage for SAP systems running on multiple EC2 instances?
easy- A.EC2 Instance Store
- B.Amazon S3
- C.Amazon EBS
- ✓ D.Amazon FSx for NetApp ONTAP
- ✓ E.Amazon EFS
Why D: 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.
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Last reviewed: Jul 4, 2026
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