There are no limitations to the encryption keys from the ONTAP side. However, it's important to note that we do have limitations on the number of volumes that can be created in a node/cluster. The max...There are no limitations to the encryption keys from the ONTAP side. However, it's important to note that we do have limitations on the number of volumes that can be created in a node/cluster. The maximum number of volumes is defined by ONTAP version and hardware specifications. If you're using external key manager(EKM), please note that any potential limitations on the keys would likely be imposed by the KeyServer itself.