SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a containerized application to Amazon ECS. The application requires persistent storage that can be shared across multiple containers running on different EC2 instances. Which storage solution should they use?
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 shared file system that can be accessed by multiple EC2 instances concurrently, making it ideal for persistent storage shared across containers in Amazon ECS. Option A (Amazon FSx for Lustre) is designed for high-performance computing workloads and is not intended for general shared container storage. Option B (Amazon EBS) volumes are block-level storage that can only be attached to a single EC2 instance at a time, so they cannot be shared across multiple instances. Option D (Amazon S3) is object storage, not a file system, and does not provide a standard file system interface that containers require.
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 FSx for Lustre
Why it's wrong here
FSx for Lustre is for high-performance workloads, not general container storage.
- ✗
Amazon EBS
Why it's wrong here
EBS volumes are attached to a single instance.
- ✓
Amazon EFS
Why this is correct
EFS provides a shared file system for multiple instances.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a file system.
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.