SAP-C02 Design for New Solutions Practice Question
A company is deploying a containerized application on Amazon Elastic Kubernetes Service (Amazon EKS). The application requires persistent storage that must be accessible from multiple pods simultaneously across different Availability Zones. The storage must provide high throughput and low latency, and it must be shared read-write. Which storage solution should a solutions architect recommend?
⚠ Common exam trap
The trap here is selecting Amazon EBS with ReadWriteMany, but EBS does not support multi-attach for ReadWriteMany and is limited to a single Availability Zone.
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 Elastic File System (Amazon EFS) with the ReadWriteMany access mode.
Amazon EFS is a shared file system that supports the ReadWriteMany access mode and can be mounted across multiple Availability Zones. It is designed for Linux workloads and integrates with Amazon EKS via the EFS CSI driver, providing the required high throughput and low latency for shared read-write 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 FSx for Windows File Server with the ReadWriteMany access mode.
Why it's wrong here
Amazon FSx for Windows File Server supports SMB protocol and ReadWriteMany, but it is designed for Windows workloads. The application is containerized on EKS, which typically uses Linux-based containers. While FSx can be used with Linux via SMB, it adds complexity and may not provide the same low-latency performance as EFS for Linux workloads.
- ✗
Amazon Elastic Block Store (Amazon EBS) volumes with the ReadWriteMany access mode.
Why it's wrong here
Amazon EBS volumes can only be attached to a single EC2 instance at a time and do not support the ReadWriteMany access mode. They are not suitable for shared storage across multiple pods or Availability Zones. EBS is limited to a single Availability Zone, so it cannot meet the cross-AZ requirement.
- ✗
Amazon S3 mounted as a file system using the AWS CSI driver with the ReadWriteMany access mode.
Why it's wrong here
Amazon S3 is object storage and does not natively support file system semantics like ReadWriteMany. While there are CSI drivers that mount S3 as a file system (e.g., Mountpoint for Amazon S3), they do not provide the same low-latency, high-throughput performance as a POSIX-compliant file system, and they are not ideal for shared read-write workloads with concurrent writes.
- ✓
Amazon Elastic File System (Amazon EFS) with the ReadWriteMany access mode.
Why this is correct
Amazon EFS is a fully managed, elastic NFS file system that supports the ReadWriteMany access mode, allowing multiple pods across different Availability Zones to access the same data simultaneously. It provides high throughput and low latency, and it integrates natively with Amazon EKS using the EFS CSI driver. This meets all the requirements.
Go deeper
Related to this question
About these practice questions
Courseiva writes every SAP-C02 question from scratch — 984 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Amazon Web Services exam blueprint
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.