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Difficulty: EasyLarge-Scale Data Transfer using Snow Family, DataSync, and Transfer Family

A company needs to migrate 450 TB450\text{ TB} of archived media files from its on-premises Network Attached Storage (NAS) to Amazon S3. The company has a dedicated outbound internet connection of 50 Mbps50\text{ Mbps} that is shared with other business operations, and the migration must be completed within 30 days. Which migration method should a solutions architect recommend to transfer this data to Amazon S3 within the required timeline?

  1. A
    Deploy an AWS DataSync agent on-premises and configure a task to transfer the files over the existing internet connection directly to the Amazon S3 bucket.
  2. Order multiple AWS Snowball Edge Storage Optimized devices, copy the data locally to the devices, and ship them back to AWS for import into the Amazon S3 bucket.Answer
  3. C
    Set up an AWS Transfer for SFTP endpoint integrated with the on-premises NAS, and use custom scripts to upload the files using cross-account AWS-managed KMS keys (aws/s3).
  4. D
    Provision an AWS Direct Connect connection with an AWS Transit Gateway to route the data transit over a new private virtual interface directly from the NAS to S3.

Answer

Order multiple AWS Snowball Edge Storage Optimized devices, copy the data locally to the devices, and ship them back to AWS for import into the Amazon S3 bucket.
The correct option is to use multiple AWS Snowball Edge Storage Optimized devices. Because transferring 450 TB450\text{ TB} over a 50 Mbps50\text{ Mbps} connection would take more than two years, utilizing physical Snowball Edge devices is the only viable method to complete the migration within the 30-day timeline.

Step-by-Step Solution

1
Calculate the theoretical network transfer time for the dataset over the available bandwidth.
Transferring 450 TB450\text{ TB} of data over a 50 Mbps50\text{ Mbps} network connection requires approximately 7.2×107 seconds7.2 \times 10^7\text{ seconds} (over 800 days) under ideal conditions, which exceeds the 30-day requirement.
Determining network transfer time helps identify whether online transfer methods (such as DataSync or SFTP) are feasible.
2
Evaluate physical data transfer options using AWS Snow Family.
Using multiple AWS Snowball Edge Storage Optimized devices allows the data to be copied locally at high speed and shipped to AWS, completing the migration within a few weeks.
Offline shipping bypasses the network bandwidth constraint entirely, easily meeting the 30-day timeline.

Key Concept

Selecting offline vs. online data transfer mechanisms based on dataset size, network bandwidth, and project timelines.
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Topics

Large-Scale Data Transfer using Snow Family, DataSync, and Transfer Family

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