An organization needs to retrieve 35\text{ TB} of archival data stored in an Azure Files s… — Microsoft Azure Administrator (AZ-104)

An organization needs to retrieve $35\text{ TB}$ of archival data stored in an Azure Files share and transfer it to an on-premises Windows Server 2022 file server. The on-premises facility has an internet connection with a maximum dedicated bandwidth of $20\text{ Mbps}$ for this transfer. The data transfer must be completed as quickly as possible. Which service or configuration should the administrator use to export the data?

A
An Azure File Sync group with cloud tiering disabled to synchronize the share to the on-premises server.
B
The Azure Import/Export service using customer-owned hard drives prepared with the WAImportExport tool.
A single Azure Data Box device.Answer
D
Five Azure Data Box Disk devices.

Answer

A single Azure Data Box device.

A single Azure Data Box device is correct because Azure Data Box supports exporting data from Azure Files. With a usable capacity of

80\text{ TB}

, a single device can easily hold the

35\text{ TB}

dataset. Shipping a physical device overcomes the high transfer time associated with the

20\text{ Mbps}

network connection.

Step-by-Step Solution

Analyze the source storage type and operational direction.

The source is an Azure Files share, and the operation is a data export (egress from Azure to on-premises).

The solution must support exporting data specifically from the Azure Files service.

Calculate the network transfer duration under the bandwidth constraints.

Transferring

35\text{ TB}

(

3.5 \times 10^{13}\text{ bytes}

) over a

20\text{ Mbps}

(

2 \times 10^7\text{ bps}

) connection requires:

\frac{3.5 \times 10^{13} \times 8\text{ bits}}{2 \times 10^7\text{ bps}} = 1.4 \times 10^7\text{ seconds} \approx 162\text{ days}

This network transfer time is too high, showing that offline physical transfer is necessary to complete the transfer quickly.

Evaluate the capabilities of physical offline storage options.

Data Box Disk only supports imports. Azure Import/Export does not support exporting from Azure Files. Only Azure Data Box supports exporting from Azure Files and has a matching capacity of

80\text{ TB}

This identifies the correct offline transfer tool that meets both the export capabilities and the capacity limits.

Key Concept

Azure offline data transfer capabilities and limitations for export operations.

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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