Hello @Saha
Welcome to Microsoft Q&A and thank you for posting your questions here.
For more clarity, you were asking if you can use Azure Data Box to copy data of 8 TB from one azure subscription to other azure subscription and how it will work, also requesting a link to read more.
Infact, you can use AzCopy to copy your blobs across storage accounts. and use SAS tokens to get access to storage accounts in different subscriptions.
To copy data from one Azure subscription to another using Azure Data Box, as you asked. You can use the data copy service. The data copy service runs locally on Microsoft Azure Data Box, connects to your network-attached storage (NAS) device via SMB, and copies data to Data Box. You can use the data copy service in NAS environments where intermediate hosts might not be available or with small files that take weeks for ingestion and upload of data.
For step-by-step instructions on how to copy data via SMB on Azure Data Box, you can go to this tutorial on Microsoft's website.
Source: Conversation with Bing, 7/27/2023
(1) Tutorial: Use data copy service to copy to your device - Azure Data Box
(2) Tutorial to copy data via SMB on Azure Data Box.
(3) Quickstart for Microsoft Azure Data Box | Microsoft Learn.
NOTE: Most reference here are from AI assistance generated answer.
I hope this is helpful! Do not hesitate to let me know if you have any other questions.
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Best Regards,
Sina Salam