A counter which changes when a mass storage based
resource has been added or deleted.
Additional information:
The value of this counter changes
each time the MASS-STORAGE-RESOURCE-CHANGED object
is set to eTrue. The value also changes when the
mass storage device is initialized. However, the value does not
change when a mass storage device is removed and a different
mass storage device is installed. Initializing all volumes sets
this object back to the factory default value. A reboot sets
this object back to the factory devalut value.
Returns <noSuchName>
status if attempting to access this object and there
is no storage device is installed.