AWS Certified Solutions Architect - Associate
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A medical research lab produces data that is related to a new study. The lab wants to make the data available with minimum latency to clinics across the country for their on-premises, file-based applications. The data files are stored in an Amazon S3 bucket that has read-only permissions for each clinic.
What should a solutions architect recommend to meet these requirements?
Other
Community
UAnonymous
A
Deploy an AWS Storage Gateway file gateway as a virtual machine (VM) on premises at each clinic
B
Migrate the files to each clinic's on-premises applications by using AWS DataSync for processing.
C
Deploy an AWS Storage Gateway volume gateway as a virtual machine (VM) on premises at each clinic.
D
Attach an Amazon Elastic File System (Amazon EFS) file system to each clinic's on-premises servers.
Explanation:
Explanation
Correct Answer: A
Why Option A is correct:
- AWS Storage Gateway File Gateway is specifically designed to provide on-premises applications with low-latency access to S3 objects using standard file protocols (SMB/NFS).
- It caches frequently accessed data locally, providing minimum latency for file operations.
- It presents S3 buckets as network file shares that on-premises applications can access directly.
- The read-only permissions requirement is easily managed through S3 bucket policies and IAM roles.
- Each clinic can have its own File Gateway VM, ensuring localized caching and low latency.
Why other options are incorrect:
Option B (AWS DataSync):
- DataSync is for data migration and synchronization, not for providing low-latency access to S3 data.
- It would require copying files to on-premises storage, which doesn't provide real-time access to S3 data.
- This approach would create data duplication and management overhead.
Option C (Storage Gateway Volume Gateway):
- Volume Gateway is designed for block storage (iSCSI), not file-based applications.
- It creates cloud-backed volumes, not direct access to S3 files.
- File-based applications need file protocols (SMB/NFS), not block storage.
Option D (Amazon EFS):
- EFS is a cloud-native file system that requires AWS resources to access.
- It cannot be directly attached to on-premises servers without complex VPN or Direct Connect setups.
- EFS doesn't provide the same low-latency access to S3 data as File Gateway.
- The data is already in S3, so moving it to EFS would be unnecessary and inefficient.
Key AWS Services Considered:
- AWS Storage Gateway File Gateway: Provides S3 access via file protocols with local caching
- S3 Bucket Policies: Manage read-only permissions for each clinic
- Local Caching: Ensures minimum latency for frequently accessed data
This solution provides the optimal balance of low-latency access, security, and simplicity for the described use case.
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