Applies to ONTAP 9 Mixed Cluster containing ONTAP 9.8 and 9.12.1 VMware vSphere Storage APIs - Array Integration (VAAI) NetApp Plug-in for VMware VAAI Issue After joining new nodes running ONTAP 9.12....Applies to ONTAP 9 Mixed Cluster containing ONTAP 9.8 and 9.12.1 VMware vSphere Storage APIs - Array Integration (VAAI) NetApp Plug-in for VMware VAAI Issue After joining new nodes running ONTAP 9.12.1 to a cluster running ONTAP 9.8 and performing a volume move to migrate volumes to the new nodes, the move fails with the following error: Replication encountered an unknown error. Filesystem error. (Function not implemented.)