We recently had a problem with NetApp integration. Veeam has suddenly started on a NetApp Mirror cluster to create and delete iSCSI LUN snapshots during automatically scan process. This confused the whole mirroring. There was the following support ticket (Case # 01980461). In that environment, Veeam should only work with the NFS volumes. The support told me in Veeam is currently no way to exclude LUNs or LUN types when scanning a NetApp storage.
It would be helpful in certain environments if this would be possible in the future.