AWS Certified Solutions Architect - Associate
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A company recently created a disaster recovery site in a different AWS Region. The company needs to transfer large amounts of data back and forth between NFS file systems in the two Regions on a periodic basis.
Which solution will meet these requirements with the LEAST operational overhead?
Other
Community
UAnonymous
A
Use AWS DataSync.
B
Use AWS Snowball devices.
C
Set up an SFTP server on Amazon EC2.
D
Use AWS Database Migration Service (AWS DMS).
Explanation:
Explanation
AWS DataSync is the correct answer because it provides the LEAST operational overhead for transferring large amounts of data between NFS file systems in different AWS Regions on a periodic basis.
Why AWS DataSync is the best choice:
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Purpose-built for file system transfers: DataSync is specifically designed for moving data between on-premises storage, AWS storage services, and between AWS Regions.
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NFS support: DataSync natively supports NFS file systems, making it ideal for this scenario.
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Automated and managed service: DataSync is a fully managed service that automates data transfer, handles network optimization, and provides built-in validation and monitoring.
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Periodic transfers: DataSync supports scheduled transfers, which aligns perfectly with the requirement for periodic data movement.
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Least operational overhead: As a managed service, DataSync requires minimal setup and maintenance compared to other options.
Analysis of other options:
B. AWS Snowball devices:
- Physical devices that need to be shipped
- High operational overhead for ordering, shipping, and managing devices
- Not suitable for periodic transfers between AWS Regions
- Better for one-time large data migrations from on-premises to AWS
C. Set up an SFTP server on Amazon EC2:
- Requires manual setup, configuration, and maintenance
- High operational overhead for managing EC2 instances, security, and networking
- Not optimized for large-scale data transfers between Regions
- Requires scripting and automation for periodic transfers
D. AWS Database Migration Service (AWS DMS):
- Designed specifically for database migrations, not file systems
- Not suitable for NFS file system transfers
- Focuses on database replication and migration, not general file transfers
Key benefits of AWS DataSync for this scenario:
- Automated scheduling: Can be configured for periodic transfers
- Incremental transfers: Only transfers changed data after the initial sync
- Data validation: Automatically validates data integrity
- Network optimization: Uses parallel streams and compression for efficient transfers
- Monitoring and logging: Integrated with CloudWatch for monitoring
- Security: Uses TLS encryption for data in transit
Therefore, AWS DataSync provides the most efficient, automated, and low-overhead solution for periodic NFS file system transfers between AWS Regions.
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