A semiconductor device includes transistors with a vertical gate electrode. One exemplary method collects information about data objects in a computer system and maps each of the data objects to a service level objective for defining a level of data indexing to be applied to the data objects. Current virus isolation protocols use primary cells, known to be susceptible to FMDV, or baby hamster kidney cells and other cell lines that are not highly sensitive to some strains of FMDV. An insulator is intermediate the first and second electrodes.