A company is designing a containerized application on Amazon Elastic Container Service (Amazon ECS). The application needs a shared file system that is highly durable, provides mount targets in each Availability Zone in a Region, and can recover data to another Region with an RPO of 8 hours. A solutions architect wants to use AWS Backup to manage cross‑Region replication. Which solution meets these requirements?
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Correct answer: Amazon Elastic File System (Amazon EFS) with the Standard storage class.
Why this is the answer
Amazon EFS with the Standard storage class is the correct choice because it natively provides a highly durable, shared file system with mount targets in each Availability Zone, suitable for containerized applications. AWS Backup supports EFS for cross-Region replication, allowing for an RPO of 8 hours or less, meeting the specified recovery objective. Amazon FSx for Windows File Server is designed for Windows-based workloads and is not typically used with Linux containers in ECS. Amazon FSx for NetApp ONTAP and Amazon FSx for OpenZFS are specialized
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