User Manual
Advanced Console Server & RIM Gateway User Manual 181
8.2.6 Overview of Network UPS Tools (NUT)
NUT is built on a networked model with a layered scheme of drivers, server and clients. NUT can be configured using the
Management Console as described above, or you can configure the tools and manage the UPSes directly from the
command line. This section provides an overview of NUT however you can find full documentation at
http://www.networkupstools.org/doc.
NUT is built on a networked model with a layered scheme of drivers, server and clients:
 The driver programs talk directly to the UPS equipment and run on the same host as the NUT network server
(upsd). Drivers are provided for a wide assortment of equipment from most of the popular UPS vendors and
understand the specific language of each UPS. They communicate to serial, USB and SNMP network connected
UPS hardware and map the communications back to a compatibility layer. This means both an expensive "smart"
protocol UPS and a simple "power strip" model can be handled transparently
 The NUT network server program upsd is responsible for passing status data from the drivers to the client
programs via the network. upsd can cache the status from multiple UPSes and then serve this status data to
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