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Microsoft 365 and Office | SharePoint | For business | Windows
A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi elenimpekri, Thank you for querying in this forum.From your description, it seems that you are using SharePoint Migration Tool to migrate SharePoint Server 2016 to SharePoint Online, however, it failed and your site contains 2 TB database and 150.000 files.If my understanding is right, we'd also want to help you directly, since our category focus on SharePoint Online built-in features, the question you mentioned is related to migrate SharePoint server site to SharePoint Online, to make sure you get professional help, we'd suggest you go to Microsoft Q & A - SharePoint Sever forum and post a new thread, which is specific channel to handle such situation.At the same time, we have also searched a lot and we can only find the article about how to use SharePoint migration tool, so we'd suggest you go to the forum we provide above and then engineers in that forum will focus on your specific scenario and provide specific suggestions. Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well! Best Regards, Sukie