SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a legacy application to AWS. The application runs on Windows Server and uses a shared file system for storage. The company wants to modernize the application by using a managed file storage service that is POSIX-compliant and can be accessed by multiple EC2 instances concurrently. Which TWO AWS services meet these requirements? (Choose TWO.)
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 Lustre
Amazon EFS (Option E) and Amazon FSx for Lustre (Option B) are both POSIX-compliant file systems that can be accessed concurrently by multiple EC2 instances. Option A (Amazon EBS) is block storage that can be attached to only one instance at a time (unless using multi-attach, which has limitations). Option C (Amazon S3) is object storage, not POSIX-compliant. Option D (Amazon S3 Glacier) is archival storage and not suitable for shared file system access.
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 EBS
Why it's wrong here
EBS is block storage and cannot be concurrently accessed by multiple instances (multi-attach is limited).
- ✓
Amazon FSx for Lustre
Why this is correct
FSx for Lustre is POSIX-compliant and supports concurrent access.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not POSIX-compliant.
- ✗
Amazon S3 Glacier
Why it's wrong here
S3 Glacier is for archival, not for active file sharing.
- ✓
Amazon EFS
Why this is correct
EFS is a POSIX-compliant file system accessible by multiple EC2 instances.
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 SAP-C02 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 SAP-C02 exam.