This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud
I will call MS for those errors. My question is if you have found a different way outside of web upload or syncing with one drive or as I pointed out mapping a drive with SharePoint.
New-SPOMigrationPackage -SourceFilesPath -SourceFilesPath "E:\Source " -OutputPackagePath "c:\Save"