Mike Murphy wrote: > Hello, > > we are trying to get some information off of a building UPS system I > have the mibs and all but the graph does not show what we are looking > for. we are trying to graph kilowats used any chance you can tell me > what I ahve wrong here?? > thanks Mike
You can create a custom target for each phase where you multiply the voltage and the current (in or out) to get volt-amperes which will be a relatively close indication of watts. This depends on the reactive characteristics of the load but for typical datacenter use will be fairly accurate. Divide by 1000 to get kilowatts, but I'd leave it as watts. MRTG has only integer granularity and the graphs will scale appropriately so leaving it as watts will give more precision. Or, you can multiply the amperes by the nominal voltage at the input/output (120, 208, etc.) for a rough approximation. Voltage is relatively constant, current varies with load. Output voltage is regulated by the UPS, input is whatever the utility gives you. For a three-phase or split-phase unit you'll need to add the phases together for a total. Note that watts or kilowatts is a measure of the power consumed by the UPS or load (depending on which MIB you poll) at any given sampling instant. It is, as was pointed out others, not useful for energy billing purposes. -- Jay Hennigan - CCIE #7880 - Network Engineering - [email protected] Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
