''Bus Mainframes'' regulate and handle the transfer of massive quantities of data at near instantaneous speeds. They are not essential to a network, but are required to keep data transfer instant. They usually transfer data back and forth between servers and processor units. If a Bus Mainframe is missing, network output may be unreliable or slow. | ''Bus Mainframes'' regulate and handle the transfer of massive quantities of data at near instantaneous speeds. They are not essential to a network, but are required to keep data transfer instant. They usually transfer data back and forth between servers and processor units. If a Bus Mainframe is missing, network output may be unreliable or slow. |