How Backup underlying storage for new Sagemaker Studio spaces

Hi I would like to implement a backup policy at the level of Sagemaker Studio Spaces, on the classic version, as the storage used was EFS, it was possible to create a configuration via the CLI/LCC scripts to restore the profiles (user profiles) and their home directories and to guarantee a restoration in case of deletion of the spaces. Now with the new Studio release, I'm not sure if EFS is still the underlying storage service, or EBS, or both. Thanks for your answers!