AWS Certified Solutions Architect - Associate
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A company wants to migrate an on-premises data center to AWS. The data center hosts a storage server that stores data in an NFS-based file system. The storage server holds 200 GB of data. The company needs to migrate the data without interruption to existing services. Multiple resources in AWS must be able to access the data by using the NFS protocol.
Which combination of steps will meet these requirements MOST cost-effectively? (Choose two.)
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UAnonymous
A
Create an Amazon FSx for Lustre file system.
B
Create an Amazon Elastic File System (Amazon EFS) file system.
Explanation:
Explanation
Correct Answers: B and E
B. Create an Amazon Elastic File System (Amazon EFS) file system.
- Amazon EFS provides a fully managed, scalable NFS file system that can be accessed by multiple AWS resources simultaneously.
- It supports the NFS protocol, which matches the requirement that "Multiple resources in AWS must be able to access the data by using the NFS protocol."
- EFS is cost-effective for this scenario because it's a managed service with pay-as-you-go pricing.
E. Install an AWS DataSync agent in the on-premises data center. Use a DataSync task between the on-premises location and AWS.
- AWS DataSync is specifically designed for migrating data to AWS with minimal disruption to existing services.
- It provides automated, secure data transfer with built-in validation and scheduling capabilities.
- DataSync can transfer data directly to EFS, ensuring the NFS protocol compatibility is maintained.
- It's more efficient and reliable than manual copy commands for 200 GB of data.
Why other options are incorrect:
A. Create an Amazon FSx for Lustre file system.
- FSx for Lustre is optimized for high-performance computing workloads, not general-purpose NFS file sharing.
- It's typically more expensive than EFS for this use case.
C. Create an Amazon S3 bucket to receive the data.
- S3 is an object storage service, not a file system with NFS protocol support.
- While DataSync can transfer to S3, the requirement specifies NFS protocol access, which S3 doesn't provide natively.
D. Manually use an operating system copy command to push the data into the AWS destination.
- Manual copying is not cost-effective or reliable for 200 GB of data.
- It doesn't provide the automated, validated transfer that DataSync offers.
- It would likely cause service interruption during the transfer.
Key Requirements Met:
- NFS protocol access: EFS provides NFS v4.0 and v4.1 protocol support
- Multiple resource access: EFS can be mounted by multiple EC2 instances, containers, and serverless applications
- Migration without interruption: DataSync provides incremental sync capabilities and scheduling
- Cost-effectiveness: EFS + DataSync is the most economical managed solution for this scenario
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