The APC Smart UPS SMX3000LV X 3000 Rack Tower LCD UPS is the most popular UPS in the world for servers, storage and network power protection. Trusted to protect critical data and equipment from power problems by supplying clean and reliable network grade power. In addition to legendary reliability and manageability, Smart UPS have extremely high efficiency at low, medium and high load levels making them ideal for today's multi core or virtualized servers that have varying load consumption.