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Forum Discussion
RN516 and control of attached APC UPS.
Using ReadyNAS RN516 with 6 4TB discs in RAID10 configuration. Connected APC UPS (CS650 400w), which was auto found by ReadyNAS. Details of UPS via Admin page came up in both <System> <Power> ...
It was my impression that "auto" meant that the NAS shuts down when it receives a critical power event. There are some more details here: http://www.networkupstools.org/docs/use ... 01s06.html
Note this is my impression, I have not seen details. Also, I believe the thresholds are only applied when the UPS is on battery, so if it is charging the thresholds are not applied (and shutdown shouldn't ever be triggered).
I agree overall that some more details on this would be useful in a knowledge base article.
Here are the steps that occur when a critical power event happens:
The UPS goes on battery
The UPS reaches low battery (a "critical" UPS), that is to say upsc displays:ups.status: OB LB
The exact behavior depends on the specific device, and is related to:battery.charge and battery.charge.low
battery.runtime and battery.runtime.low
Note this is my impression, I have not seen details. Also, I believe the thresholds are only applied when the UPS is on battery, so if it is charging the thresholds are not applied (and shutdown shouldn't ever be triggered).
I agree overall that some more details on this would be useful in a knowledge base article.
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