Computer Hardware Terms, Glossary and Dictionary

Uninterruptible Power Supply (UPS) is a device that provides power backup when the normal electricity fails or drops to an unacceptable voltage level. UPS systems can provide power from a a few minutes to several hours. In mission critical data centers, UPS systems are used until electrical generators take over. UPS systems can be set up to alert file servers to shut down in an orderly manner when an outage has occurred, and the batteries are running out.

Related Terms

UPS: Uninterruptible Power Supply