An offline configuration simulator allows a user to model and manage a simulated data storage system. A solid-state heat pump, such as a thermo-electric cooler, is used to pump heat from a cold portion to a hot portion of the device. The invention further provides methods for the treatment of Alzheimer’s disease or common cancers. The painting is preferably carried out by means of an apparatus with a manual airbrush, which is preceded by the application of a primer which acts as a fixative.