AZ-900 Practice Question 46: Data Box Migration
Microsoft Azure Fundamentals (AZ-900) · Test 5 · question 6 of 10
A media company must move an 80 TB on-premises archive into Azure Blob Storage. Its site internet link is slow enough that uploading the archive over the wire would take many months, and the link is also needed for daily business. What should it use?
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Answer:
Azure Data Box exists for exactly this case: it is available to transfer on-premises data to Blob Storage "when large datasets or network constraints make uploading data over the wire unrealistic." You request a Data Box device from Microsoft, copy your data onto it locally, and ship it back to be uploaded into Blob Storage, so the bulk transfer never touches the site's internet link.
Option A, AzCopy, is a command-line tool that copies data to and from Blob Storage and is the right answer whenever the network can carry the volume. Running several copies in parallel does not conjure bandwidth the link does not have; it just saturates it sooner. Option C, Azure File Sync, caches Azure *file shares* on Windows Servers; it targets Azure Files rather than Blob Storage, and it is built for ongoing hybrid synchronization rather than a one-off bulk seed. Option D, Azure Storage Explorer, is a graphical client for browsing and transferring storage data and is bounded by the same slow link as AzCopy.
Reference: Introduction to Blob (object) Storage