AWS Certified Solutions Architect - Associate
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A company stores its data on premises. The amount of data is growing beyond the company's available capacity.
The company wants to migrate its data from the on-premises location to an Amazon S3 bucket. The company needs a solution that will automatically validate the integrity of the data after the transfer.
Which solution will meet these requirements?
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A
Order an AWS Snowball Edge device. Configure the Snowball Edge device to perform the online data transfer to an S3 bucket
B
Deploy an AWS DataSync agent on premises. Configure the DataSync agent to perform the online data transfer to an S3 bucket.
C
Create an Amazon S3 File Gateway on premises Configure the S3 File Gateway to perform the online data transfer to an S3 bucket
D
Configure an accelerator in Amazon S3 Transfer Acceleration on premises. Configure the accelerator to perform the online data transfer to an S3 bucket.
Explanation:
Explanation
AWS DataSync is the correct solution because:
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Automatic Data Integrity Validation: DataSync automatically validates data integrity by comparing checksums of source and destination files after transfer. It uses checksums to ensure data is transferred accurately and completely.
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Online Data Transfer: DataSync performs online data transfer over the network, which is suitable for migrating data from on-premises to Amazon S3.
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Agent-Based Architecture: DataSync requires deploying an agent on-premises that connects to AWS services to orchestrate the data transfer.
Why the other options are incorrect:
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A. AWS Snowball Edge: While Snowball Edge devices can transfer large amounts of data, they are primarily for offline data transfer (physical device shipping). Snowball Edge does provide data integrity validation, but it's not an "online" transfer solution as required.
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C. Amazon S3 File Gateway: S3 File Gateway provides file-based access to S3 but is not designed for bulk data migration with automatic integrity validation. It's more for ongoing file access rather than one-time migration.
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D. S3 Transfer Acceleration: This service accelerates data transfer to S3 using CloudFront edge locations, but it doesn't provide automatic data integrity validation. It's purely for faster transfer speeds.
Key AWS DataSync Features:
- Automatic data integrity verification using checksums
- Network-optimized data transfer
- Incremental transfer capabilities
- Monitoring and reporting
- Support for various storage systems (NFS, SMB, S3, EFS, FSx)
This solution meets both requirements: online data transfer from on-premises to S3 and automatic data integrity validation.
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