@sundram090 Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
Data transfer speeds is high dependent on the Data (ie millions of small files – measure in k are slow to copy) and the infrastructure doing the copy
While you can you multiple NIC’s, the maximum throughput is approximately 10Gb/s for the entire Data Box.
Please let us know if you have any further queries. I’m happy to assist you further.
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