For ONTAP clusters using data-at-rest encryption such as NetApp Aggregate Encryption (NAE), NetApp Volume Encryption (NVE), NetApp Storage Encryption (NSE) or self-encrypting drives (SED), it is neces...For ONTAP clusters using data-at-rest encryption such as NetApp Aggregate Encryption (NAE), NetApp Volume Encryption (NVE), NetApp Storage Encryption (NSE) or self-encrypting drives (SED), it is necessary to contact the key manager during the boot process to unlock the encrypted aggregates, volumes, or drives.