Setting this object to snmpNormalSave(1) will cause this
device to exhibit what could be considered normal SNMP
behavior, that is each SNMP set of a persistent object
will be saved to persistent storage as part of the set
operation.
Setting this object to pushButtonSave(2) will cause SNMP
sets of persistent objects to be buffered in volatile memory
until the configuration is explicitly saved to persistent
memory, either through the CLI or by setting the
etsysSnmpPersistenceWrite object to save(2).
Setting this object to timeDelayedSave(3) will cause SNMP
sets of persistent objects to be buffered in volatile memory
until certain implementation dependent time conditions are
met. Once these conditions are met the configuration is
saved to persistent memory.
Setting this object to a mode that is not supported on that
particular implementation leads to an inconsistent value error.
On an SNMP get operation this object will return the current
persistent storage mode of operation.