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Difficulty: MediumResilient and Highly Available Storage Infrastructure

A media production company hosts a shared file repository on-premises for video editing. The company wants to migrate its storage to AWS to improve resiliency and high availability while maintaining low-latency access for on-premises editors. The design requirements include a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 10 minutes for accessing archived footage. Which of the following solutions should a solutions architect recommend?

  1. A
    Deploy an Amazon S3 File Gateway on-premises. Configure it to write data to an Amazon S3 bucket, and use an S3 Lifecycle policy to transition archived data to Amazon S3 Glacier Flexible Retrieval.
  2. Deploy an Amazon S3 File Gateway on-premises. Configure it to write data to an Amazon S3 bucket, and use an S3 Lifecycle policy to transition archived data to Amazon S3 Glacier Instant Retrieval.Answer
  3. C
    Implement a Pilot Light disaster recovery strategy by deploying Amazon EC2 instances configured with NFS in a stopped state. Use AWS Elastic Disaster Recovery (AWS DRS) to replicate files to Amazon EBS volumes, and start the instances only when a local site failure is detected.
  4. D
    Configure an Amazon EFS file system mounted on-premises. Deploy an Amazon RDS Multi-AZ database and configure read replicas in a secondary region to act as the primary failover target for file storage.

Answer

Deploying an Amazon S3 File Gateway on-premises, writing to an Amazon S3 bucket, and using an S3 Lifecycle policy to transition archived data to Amazon S3 Glacier Instant Retrieval.
The configuration using Amazon S3 File Gateway with S3 Glacier Instant Retrieval is correct because the gateway provides local caching for low-latency file access, while S3 Glacier Instant Retrieval provides millisecond retrieval times that comfortably satisfy the 10-minute RTO requirement.

Step-by-Step Solution

1
Analyze the storage latency and access protocol requirements.
The application requires NFS/SMB file protocols with low local latency, which points to Amazon S3 File Gateway.
File Gateway caches active data locally for low latency and translates file protocols to S3 API calls.
2
Evaluate the Recovery Time Objective (RTO) for archived data.
The RTO is 10 minutes, which requires a storage class with immediate or near-immediate retrieval capabilities.
Standard S3 Glacier classes have retrieval delays of hours, whereas S3 Glacier Instant Retrieval offers millisecond access.
3
Determine the lifecycle strategy to transition archived data.
Define an S3 Lifecycle policy to transition older files to S3 Glacier Instant Retrieval.
This satisfies the 10-minute RTO while optimizing storage costs.

Key Concept

Designing a hybrid file storage architecture with low-latency local access and immediate retrieval of archived data using S3 File Gateway and S3 Glacier Instant Retrieval.
Estimated Time:2m 0s
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Topics

Resilient and Highly Available Storage Infrastructure

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