This object specifies the Lun ID if Lun
zoning is configured.
If this object is the zero-length string, then
Lun zoning is not configured.
Lun zoning cannot be configured when the
corresponding instance of zoneMemberFormat
object has a value of 'fwwn', 'intf' or
'symNodeName'.
This object cannot be modified while the
corresponding value of zoneMemberRowStatus object
is 'active'.