AZ-104 Practice Question 44: AzCopy Account to Account
Microsoft Azure Administrator Associate (AZ-104) · Test 5 · question 4 of 10
You must move about 800 GB of block blobs from a storage account in North Europe to a newly created account in UK South. It is a one-off migration, it has to run unattended from a small build agent on a modest internet connection, and it must be restartable if it is interrupted overnight.
What should you use?
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Answer:
AzCopy "is a command-line utility that you can use to copy data to, from, or between storage accounts", and "copying data from one storage account to another storage account" is one of its listed use cases. It fits every constraint in the stem: it is a CLI tool that you "can also incorporate into automated scripts for batch operations, scheduled data transfers, or continuous integration pipelines", and an interrupted transfer is picked back up with azcopy jobs resume, which "resumes the existing job with the given job ID". Authorise it once with Microsoft Entra ID rather than appending a SAS token to every command.
Option A makes the laptop the bottleneck and the single point of failure. Storage Explorer is a graphical tool for browsing and ad hoc transfers; a round trip down to a workstation and back up costs egress, time, and any chance of running unattended.
Option B is the wrong service entirely. Azure File Sync synchronises an Azure file share with Windows Servers; it does not connect two storage accounts, and it does not handle block blobs.
Option D misuses a durability feature. Geo-redundant storage replicates to the region's fixed pair, not to a region you choose, and a failover is a disaster-recovery action against your live account, not a migration technique.
Reference: Get started with AzCopy