| uninterruptible power supply |
Means of ensuring the continuity and raising the quality of electricity supplied to a computer system.
Uninterruptible power supply (UPS) comes in many different varieties but the aim is always to protect the system against complete failure or undesirable power fluctuations in the mains electricity supply. UPS is an important element in safeguarding the R/3 System against unplanned downtime.
If UPS cannot continue to supply electricity (for example, because the battery backup is exhausted), it normally ensures a graceful shutdown of the system as it nears the end of its power. This greatly reduces recovery time when the power supply is finally restored.