I haven't used a StoreVault system, but am familiar with the product.
It's running Data ONTAP, but a simplified version of it. You don't get CLI or FilerView access.
Autosupport can be configured from StoreVault Manager to send email alerts to an admin.
These emails would notify of the failures you're looking for - NIC, drives, etc.
There is support for Kerberos encryption in an NFS environ. I don't see IPsec or other encryption mentioned.
I hope this response has been helpful to you.
At your service,
Eugene E. Kashpureff
Senior Systems Architect / NetApp Certified Instructor
(P.S. I appreciate points for helpful or correct answers.)