Stand-By Power System
From Unofficial BOINC Wiki
[edit] General
A source of emergency power that is used when the main supply of power is interrupted. In function it serves the same purpose as does an Uninterruptible Power Source (UPS). The main difference is that the Standby Power System only connects to the protected system after the loss or disruption of power. There is a short delay after the detection of the interruption or other disturbance on the input side before the Standby Power System switches over and begins to provide power to the protected system. Like a UPS, the Standby Power System stores energy in batteries and uses them to create the power, recharging them after the disturbance has ended. Also like the UPS, the main goal is not to provide long-term power replacement, but is to bridge the gap between the disturbance of power until other alternative power sources can be brought on-line or the protected systems can be shut-down in an orderly manner. Usual endurance for the Standby Power System to provide power are about 10 to 15 minutes.
This provides sufficient protection to insure the minor disturbances can be bridged without compromising the availability of the computer system.
These systems are also known as " Stand-By Power Supply".
