An enterprise plans to migrate hundreds of terabytes of on-premises file share data to Azure Storage. The organization has limited WAN bandwidth, and users must continue modifying files on-premises during the migration process. The migration strategy must achieve the following: - Move the bulk of existing data without overloading the limited network connection - Synchronize incremental changes and modified metadata before the final cutover with minimal downtime Which migration strategy should the enterprise implement?

Use Azure Data Box for the initial bulk data transfer, followed by Azure Storage Mover for online delta catch-up: ### What the Solution Is **Azure Data Box** is a physical appliance service provided by Microsoft designed to move massive volumes of data into Azure offline, bypassing bandwidth-constrained wide area networks. **Azure Storage Mover** is a fully managed cloud migration service that automates and orchestrates the migration of unstructured files and folders from on-premises storage to Azure Storage. ### How It Meets the Requirements - **Conserving Network Bandwidth**: **Azure Data Box** allows the enterprise to copy hundreds of terabytes locally to an encrypted physical device and ship it to an Azure datacenter, eliminating the need to transfer large baselines over a slow internet connection. - **Synchronizing Active Delta Changes**: While the physical device is in transit, users continue to modify local files. **Azure Storage Mover** performs an **online catch-up phase**, scanning the source storage, detecting differences, and transferring only the delta (new files, modified files, and permission/ACL updates) over the network before the final workload cutover. ### Key Advantages and Capabilities - **Reduced Network Saturation**: Offloads large bulk payloads to physical media while reserving WAN capacity for daily business operations. - **Minimal Cutover Downtime**: The catch-up phase transfers only small incremental modifications, making the final transition window predictable and brief. - **High File Fidelity**: Preserves file metadata, timestamps, and access control lists (ACLs) across shares. - **Centralized Orchestration**: Enables tracking migration progress, managing agent endpoints, and monitoring logs from the Azure portal. ### Why This Is Optimal Combining an offline physical transport mechanism (**Azure Data Box**) with an intelligent cloud-managed synchronization tool (**Azure Storage Mover**) provides the ideal hybrid migration workflow for large datasets where WAN bandwidth is constrained and data remains continuously active.

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Plan Bulk Migration Azure Data Box Storage Mover | Start here! Get your feet wet with the Microsoft cloud and begin your journey to earning your Microsoft Certified: Azure Fundamentals certification! | StudyCerts

AZ-900 Microsoft Azure Fundamentals Exam

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