10 TB database backup / restore Question
This is simple and quick to test.

Take that 2TB backup file, copy it to Azure using AzCopy.  Provision a SQL Server using the "Free License: SQL Server 2017 Developer on Windows Server 2016" image configured with 12-15 TB of SSD storage.  Remote desktop to the SQL VM and restore the backup directly from Blob Storage, or copy it to a local disk and then restore it.

Just remember to shut down the VM when you're not testing, and destroy it and the disks when you're done to minimize the charges.