Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
Contoso has 120 TB of uncompressed media files stored on an on-premises NAS. You must migrate all data to an Azure Storage account within 10 days. The corporate internet link is a 200 Mb/s dedicated connection and is fully utilized during business hours; only an 8-hour nightly maintenance window is available. The solution must require the least changes to the existing infrastructure and avoid saturating the link during the day. Which migration approach should you recommend?
Order one or more Azure Data Box Heavy appliances, copy the files to them locally, and ship the devices to Microsoft for upload to Azure Storage.
Deploy an Azure Data Box Gateway virtual appliance on-premises and perform continuous sync to Azure during the nightly window.
Use AzCopy to upload the files directly over the 200 Mb/s link during the nightly maintenance window.
Configure Azure File Sync with cloud tiering to replicate the NAS share to an Azure file share over the existing connection.
An offline transfer is required because the available 200 Mb/s link can move only about 7 TB in the given 10-day maintenance-window schedule (200 Mb/s ≈ 25 MB/s; 25 MB/s × 8 hours × 10 days ≈ 7 TB). Azure Data Box Heavy is designed for bulk transfers of up to 1 PB of data by copying locally and shipping the appliance to an Azure datacenter; it avoids dependence on limited network bandwidth and demands no architectural changes. AzCopy, Data Box Gateway, and Azure File Sync all rely on the existing network link, which cannot meet the deadline even if used exclusively during maintenance windows.
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Microsoft Azure Solutions Architect Expert AZ-305
Design infrastructure solutions
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