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Forum Discussion
techman05
Apr 22, 2012Guide
energy performance on duo v1?
I was trying to run the number for the wattage used on my battery backup and was trying to see what the wattage of a readynas duo was. I did as an estimate that my pc's power supply is set to 110[volt...
StephenB
Apr 22, 2012Guru - Experienced User
I think the NAS gets that information directly from the UPS, so it should take the full draw on the UPS into account.
techman05 wrote: The UPS shows in raidAR that it should have 40 minutes of power but I don't know if that's taking into effect the other devices on the battery backup.
Maybe test the shutdown by simply unplugging the UPS and monitoring it - putting the plug back in before it gets all the way down to 10%. Then you can gauge the battery life directly. Possibly your shutdown setting just needs to be more conservative - the UPS report might be non-linear (take a nose dive to 0 when it reaches 20% for instance).
A safer way to test might be to plug in the Duo into the mains, and connect a 40 watt bulb to the UPS. Then Raidar/NAS can monitor, and should shut down. But there should be no risk to the raid array, since the power is never disrupted.
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