The value of tmnxIPsecSAStorageType indicates how the row is stored.
Entries with tmnxIPsecSAStorageType of 'read-only' are dynamic SAs
and are created by the IPsec sub-system and cannot be modified or
destroyed. All the entries created by the user are manual SAs and
will have the tmnxIPsecSAStorageType as 'nonVolatile'.