Allied Telesis AT-S62 - Manual (Page 243)

AT-S62 User’s Guide
Section III: SNMPv3 Operations 243
N-NonVolatile
Select this storage type if you want the ability to save an entry in
the SNMPv3 User Table to nonvolatile memory. After making
changes to an SNMPv3 User Table entry with a NonVolatile
storage type, the S - Save Configuration Changes option appears
on the Main Menu, allowing you to save your changes.
7. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.