This solution is the most cost-effective and meets all technical requirements. AWS DataSync is the purpose-built service for transferring large amounts of data from on-premises storage, like NFS, to AWS. Deploying the DataSync agent as a VM in the existing on-premises Hyper-V environment is the correct architecture, as it allows direct access to the NFS server. DataSync natively supports bandwidth throttling and task scheduling, fulfilling the requirement to copy data during non-business hours. Amazon S3 Glacier Deep Archive is the lowest-cost storage option, and its standard retrieval time of 12 hours is well within the required one-week timeframe, making it the most cost-effective choice for long-term archival.

A. Deploying the DataSync agent on an EC2 instance is inefficient and costly. S3 Glacier Instant Retrieval is more expensive than necessary for a one-week retrieval requirement.

C. Deploying the agent on EC2 is inefficient. Writing to S3 Standard first and then transitioning incurs unnecessary S3 Standard storage costs and lifecycle transition fees.

D. AWS Storage Gateway's Tape Gateway is designed to replace physical tape libraries for backup applications, not for a direct file-based copy from an NFS share. This adds unnecessary complexity.

1. AWS DataSync User Guide

"Requirements for AWS DataSync agents": This document confirms that the DataSync agent can be deployed on a Microsoft Hyper-V hypervisor on-premises. It states

"You can deploy your agent on a VMware ESXi

Linux Kernel-based Virtual Machine (KVM)

or Microsoft Hyper-V hypervisor."

2. AWS DataSync User Guide

"Working with tasks": This section details the features for managing data transfer. It explicitly mentions

"You can control the amount of network bandwidth that a task uses..." and "You can also schedule your task to run periodically

" which directly addresses the bandwidth and scheduling requirements.

3. AWS DataSync User Guide

"Creating a location for Amazon S3": This guide specifies that when creating an S3 location as a destination

you can choose the S3 storage class directly. The supported classes include GLACIERDEEPARCHIVE

confirming that data can be written directly to this tier without intermediate steps.

4. Amazon S3 User Guide

"Amazon S3 storage classes": This official documentation compares the S3 storage classes. It describes S3 Glacier Deep Archive as "Amazon S3’s lowest-cost storage class" and notes its standard retrieval time is "within 12 hours

" which satisfies the "within 1 week" requirement at the lowest cost.

5. AWS Storage Gateway User Guide

"What is Tape Gateway?": This document clarifies the use case for Tape Gateway: "A tape gateway provides a virtual tape library (VTL)... You can back up your data to virtual tapes in the VTL by using your existing tape-based backup application." This shows it is not the appropriate tool for a file-based transfer from an NFS server.