ONTAP 9.9.1 adds "System Manager support for SnapMirror Cloud"
Is Cloud Manager required to use the cloud backup feature in System Manager for ONTAP 9.9.1?
Answer: You can back up and restore volumes to ONTAP S3 by using SnapMirror Cloud without a requirement for Cloud Manager. The restoration is provided back to the original cluster only for full volume restore (a new volume will be created). For backup to a public cloud (Amazon Web Services [AWS], Azure, or Google Cloud), System Manager will leverage Cloud Manager by using the Cloud Backup Service (CBS). In this workflow, additional functions such as single-file restore are available through CBS and ISV partner apps. If you are using an ISV backup app with SnapMirror Cloud, then the configuration can be done by using that app – do not use System Manager to configure SnapMirror Cloud in this case