What should a solutions architect do to migrate and store the data at the LOWEST cost?
Order AWS Snowball devices to transfer the data. Use a lifecycle policy to transition the files to Amazon S3 Glacier Deep Archive.
Deploy a VPN connection between the data center and Amazon VPC. Use the AWS CLI to copy the data from on premises to Amazon S3 Glacier.
Provision a 500 Mbps AWS Direct Connect connection and transfer the data to Amazon S3. Use a lifecycle policy to transition the files to Amazon S3 Glacier Deep Archive.
Use AWS DataSync to transfer the data and deploy a DataSync agent on premises. Use the DataSync task to copy files from the on-premises NAS storage to Amazon S3 Glacier.
Explanations:
AWS Snowball devices allow for efficient offline data transfer, making it ideal for transferring large amounts of data quickly. Using a lifecycle policy to transition to S3 Glacier Deep Archive ensures the data is stored at the lowest cost for long-term retention.
Deploying a VPN connection would not effectively handle the 700 TB of data transfer within the one-month timeframe, as it would be too slow and could incur higher costs for bandwidth usage. Additionally, S3 Glacier is not directly accessible via CLI for large-scale migrations efficiently.
While Direct Connect provides a more stable and potentially faster connection than a VPN, the setup process and costs associated with provisioning a Direct Connect line would be higher and could delay the migration, making it unsuitable for this scenario.
AWS DataSync is useful for transferring data, but it typically requires ongoing operational costs. Also, it may not complete the transfer within the desired timeframe for such a large dataset over the given bandwidth. Transitioning to S3 Glacier may not be as cost-effective as using Snowball for initial transfer.
I value that the answer is:
Order AWS Snowball devices to transfer the data. Use a lifecycle policy to transition the files to Amazon S3 Glacier Deep Archive.