A redundant power supply refers to a system that includes multiple power supply units (PSUs) designed to provide backup support in case of a primary power supply failure. The purpose of a redundant power supply is to ensure continuous and uninterrupted power to critical devices or systems, such as servers, network equipment, or data centers.

Hot swapping is the ability to replace or install a system component without shutting down the attached rack or server. Hot swap (hot-swappable) redundant power supply units (PSUs) can be removed and installed while the server is running without affecting the rest of the server’s capabilities. Hot swapping or hotplugging gets its name because devices are swapped while a computer is running - or hot. Artesyn Embedded Power, an Advanced Energy company, provides line-up of hot swap redundant power supply for enterprise servers, storage servers, network computers and other computing appliances.