I am trying to move Onpremise file shares on a file server to azure files. I have already completed initial poc with below steps

1. created azure file share and joined it to Hybrid AD

2. Installed File sync on the file server and created a file sync group to sync files on shares to Azure files

3. Mapped the azure file shares on clients using Intune

All great

now what are the practical issues

1. Checking nested groups to propagate top level share permissions to folders and files inside the parent folder

2. File Shadow copies. How to get file shadow copies in Azure files

3. limitations of azure files share size

4. Costing of data