Quick Answer
The answer is Amazon EFS and Amazon EBS. EFS provides a fully managed, shared file system that persists independently of any container lifecycle, making it ideal for stateful ECS tasks on Fargate or EC2, while EBS volumes can be attached to the underlying EC2 instances running ECS tasks to retain data after the container stops. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your understanding of persistent storage for stateful container workloads, specifically the distinction between ephemeral storage (Fargate’s default, which is lost) and durable options like EFS and EBS. A common trap is selecting S3 (object storage, not a POSIX file system) or ECR (a registry, not storage). Remember the mnemonic: “Fargate forgets, EFS and EBS endure” — if the task needs shared, persistent file access across multiple containers, choose EFS; if it’s a single EC2-hosted task needing block-level persistence, choose EBS.
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 a legacy application to Amazon ECS. The application has a stateful component that stores data on the local filesystem. Which TWO storage options can be used to persist data beyond the lifecycle of the container?
Amazon EBS
EBS volumes can be attached to EC2 instances for persistent block storage.
Amazon ECS Fargate ephemeral storage
Why wrong: Ephemeral storage is deleted when the task stops.
Amazon ECR
Why wrong: ECR is a container image registry, not storage for application data.
Amazon S3
Why wrong: S3 is object storage, not a file system.
Amazon EFS
EFS provides persistent, shared file storage for containers.
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 EBS
Options B and D are correct. EFS provides persistent shared file storage, and EBS volumes can be attached to EC2 instances running ECS tasks. Option A is wrong because Fargate ephemeral storage is not persistent. Option C is wrong because S3 is object storage, not a file system. Option E is wrong because ECR is a container registry.
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 EBS
Why this is correct
EBS volumes can be attached to EC2 instances for persistent block storage.
Related concept
Read the scenario before looking for a memorised answer.
Amazon ECS Fargate ephemeral storage
Why it's wrong here
Ephemeral storage is deleted when the task stops.
Amazon ECR
Why it's wrong here
ECR is a container image registry, not storage for application data.
Amazon S3
Why it's wrong here
S3 is object storage, not a file system.
Amazon EFS
Why this is correct
EFS provides persistent, shared file storage for containers.
Related concept
Read the scenario before looking for a memorised answer.
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 SAP-C02 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.
Accelerate Workload Migration and Modernization — study guide chapter
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FAQ
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon EBS — Options B and D are correct. EFS provides persistent shared file storage, and EBS volumes can be attached to EC2 instances running ECS tasks. Option A is wrong because Fargate ephemeral storage is not persistent. Option C is wrong because S3 is object storage, not a file system. Option E is wrong because ECR is a container registry.
Identify which SAP-C02 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 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?
mediumWhy C: Amazon EFS provides a shared file system accessible from multiple instances. Option A is wrong because EBS volumes are single-instance. Option B is wrong because S3 is not a file system. Option D is wrong because FSx for Lustre is for high-performance computing.
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Last reviewed: Jun 20, 2026
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.
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