APC Symmetra UPS Systems Modern data centers and critical load require a UPS which maintains high level of continuity, is scalable, is modular and easily servicable. Engineered to deliver the highest level of business continuity possible, Symmetra's modular, redundant architecture can scale power and run time as demand increases or when higher levels of availability are required. Hot-swappable, user replaceable power, battery, and intelligence modules enables low MTTR and ease of service.