ALT NetApp Volume Encryption (NVE) is a software-based, data-at-rest encryption solution available starting with NetApp ONTAP 9.1 management software. NVE allows ONTAP to encrypt data and to have that data stored on a disk without requiring self-encrypting drives. NetApp Aggregate Encryption (NAE) is an enhancement of the software-based NVE data-at-rest solution that allows ONTAP to encrypt data for each volume with the keys shared for the aggregate. See the KB for more..