Is NetApp storage Encryption supported in Data ONTAP 8.1.1 Cluster-Mode?

A.
No, but you can file a PVR to request support.

B.
No. it is targeted for a future release of Data ONATP.

C.
Yes, only with a special license installed.

D.
Yes, it has been supported since 8.0.1.

Explanation:
http://www.ntapgeek.com/2011/03/netapp-storage-encryption-available.html
March, 2011: “With the recent release of Data ONTAP 8.0.1, NetApp now offers full disk encryption to prevent
unauthorized access to data at rest.”