Quick Answer
The answer is Amazon EFS and Amazon FSx for Lustre. Amazon EFS provides a fully managed NFS file system that can be mounted concurrently across multiple Linux EC2 instances, making it the natural choice for a shared file system for SAP multi-instance access where custom ABAP programs write to a local file system. FSx for Lustre offers a high-performance, POSIX-compliant file system ideal for SAP workloads requiring low-latency shared storage, though it is often used for HPC or temporary scratch data. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your ability to distinguish between shared file systems and single-instance or object storage—a common trap is confusing Amazon S3 (object storage) or Amazon EBS (block storage attachable to only one instance) with a true shared file system. Remember the memory tip: “EFS for NFS, FSx for speed, EBS for one, S3 for objects.”
This PAS-C01 practice question tests your understanding of migration. 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.
A company is migrating its SAP system to AWS. The system uses a custom ABAP program that writes to a local file system. Which TWO AWS services can the company use to provide a shared file system accessible to multiple EC2 instances?
Amazon FSx for Lustre
FSx for Lustre provides a POSIX-compliant file system for shared access.
Amazon RDS
Why wrong: RDS is a managed database service, not a file system.
Amazon S3
Why wrong: S3 is object storage, not a file system.
Amazon EFS
EFS supports NFS and can be shared across instances.
Amazon EBS
Why wrong: EBS volumes can only be attached to one instance at a time.
Answer choices
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 Lustre
Options A and C are correct. Amazon EFS provides a NFS file system that can be mounted on multiple Linux instances. Amazon FSx for Lustre is a high-performance file system for HPC workloads. Option B is wrong because Amazon S3 is object storage. Option D is wrong because Amazon EBS can only be attached to one instance. Option E is wrong because Amazon RDS is a database service.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon FSx for Lustre
Why this is correct
FSx for Lustre provides a POSIX-compliant file system for shared access.
Related concept
Read the scenario before looking for a memorised answer.
Amazon RDS
Why it's wrong here
RDS is a managed database service, not a file system.
Amazon S3
Why it's wrong here
S3 is object storage, not a file system.
Amazon EFS
Why this is correct
EFS supports NFS and can be shared across instances.
Related concept
Read the scenario before looking for a memorised answer.
Amazon EBS
Why it's wrong here
EBS volumes can only be attached to one instance at a time.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Migration — This question tests Migration — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon FSx for Lustre — Options A and C are correct. Amazon EFS provides a NFS file system that can be mounted on multiple Linux instances. Amazon FSx for Lustre is a high-performance file system for HPC workloads. Option B is wrong because Amazon S3 is object storage. Option D is wrong because Amazon EBS can only be attached to one instance. Option E is wrong because Amazon RDS is a database service.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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
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. A company is migrating an on-premises application to AWS. The application requires low-latency access to a shared file system that can be mounted by multiple EC2 instances simultaneously. Which storage solution should they use?
easyWhy A: Amazon EFS provides a scalable, shared file system for multiple EC2 instances. Option A is correct. Option B is wrong because EBS volumes can be attached to only one instance. Option C is wrong because S3 is object storage, not a file system. Option D is wrong because Instance Store is ephemeral.
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Last reviewed: Jun 20, 2026
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.
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