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Multiple local (serial USB
8.2.1 Managed UPS Connections
A Managed UPS is a UPS that is directly connected as a Managed Device to the console server. You can connect it via serial or USB cable or by the
network. The console server becomes the master of this UPS, and runs a upsd server to allow other computers that are drawing power through the
UPS (slaves) to monitor the UPS status and take appropriate action, such as shutdown when the UPS battery is low.
Serial, USB, or
The console server may or may not be drawing power itself through the Managed UPS. When the UPS's battery power reaches critical, the console
server signals and waits for slaves to shut down, then powers off the UPS.
networked) UPSes
Figure 8-5. Connecting to remote UPS.
network
connections
Managed
UPS
Figure 8-6. Managed UPS connections.
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Managed UPS
Multiple remote
UPSes
Chapter 8: Power Management
LES1102A
LES1102A
Remote UPS
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