During further discussions, the 3-2-1 rule was recommended.

From existing backups at the primary site, create a backup copy to the secondary site. Offload backup data to object storage using Scale-out Backup Repository capacity tier.

Send replicas directly from the primary to the secondary site. Backup replicas on the secondary site and tier this to object storage using Scale-out Backup Repository capacity tier.

Send backups directly from the primary to the secondary site, avoiding duplicate data storage. Tier backup data to object storage using Scale-out Backup Repository capacity tier.

Use storage snapshot support to backup a virtual machine using the secondary array. Backup snapshots on the secondary site and tier this to object storage using Scale-out Backup Repository capacity tier.