UPS is an abbreviation for Uninterruptible Power Supply or Uninterruptible Power Source. It is a battery used to power a computer or a server in order to avoid the loss of information when the main source of energy fails for reasons unknown or becomes unstable. A diesel generator practically self-explanatory. UPSs and generators are used as a backup in data centers to back up the power and to ensure the continuous functioning of all the machines located there. Since the UPS runs at all times, it provides the required power for the web servers to remain operational until the generator starts and takes over. Using this sort of a backup is essential for any data center or service provider that wants to keep their hardware and info intact in case of a power surge or outage, because it offers them plenty of time to react until the issue is resolved and the primary power supply is restored.
