Monitoring UPS over SNMP for Readynas nv+ v2.

Question

Hi, I cant understand why the Readynas is not switching off when a low UPS battery level is reached.

As you can see on the screenshots, I am monitoring a UPS over SNMP and it can ready the values without issues.

What am I doing wrong? Is the MIB incorrect?

Hope someone can give me some pointers. :-)

Thanks

StephenB · Answer

Is the UPS also protecting the switch(es) between the NAS and the UPS?
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Have you also tried connecting the UPS to the NAS with USB?

xbmcgotham · Answer

Hi&nbsp;StephenB&nbsp;,&nbsp;The power court of the NAS is going into the UPS.&nbsp;The UPS is a serverrack UPS and only has power and a network connection, which is used to communicated with the other devices on the network. No USB available.&nbsp;&nbsp;&nbsp;

StephenB · Answer

xbmcgotham&nbsp;wrote:
No USB available.

This is the Smart-UPS X 2200?&nbsp; The manual (attached) says there is a USB port.
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xbmcgotham · Answer

Hi,&nbsp;Its not completly the same as the document. mine is a&nbsp;SMX2200HV&nbsp;The manual does look to show a usb, not sure why I never seen it. I will have another look on the UPS. :-)&nbsp;Question:1. why would I connect the NAS with the UPS using USB cable? Does this not defeat the purpose of the network monitoring option?2 If all would have worked correctly without using a USB cable, what would be the value on which the NAS should switch off when using the network monitor option? Low battery? Any idea?&nbsp;Thanks

StephenB · Answer

xbmcgotham&nbsp;wrote:
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1. why would I connect the NAS with the UPS using USB cable? Does this not defeat the purpose of the network monitoring option?
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The idea is that you switch away from SNMP, and try using that alternate monitoring tool.&nbsp; If that works, it would give you a clean shutdown if the power were to fail.
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In any event, as far as the NAS is concerned, there is no particular advantage I am aware of with SNMP over USB.&nbsp;&nbsp;
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But I'm not sure that SNMP isn't working properly (see below)
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xbmcgotham&nbsp;wrote:
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what would be the value on which the NAS should switch off when using the network monitor option? Low battery? Any idea?
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I don't know (I use USB monitoring with a different brand of UPS), but I did look at the MIB a couple years ago.&nbsp; I believe it shuts down when the UPS sends a trap.&nbsp; I think you can configure the timing of that on the APC.&nbsp;&nbsp;https://community.netgear.com/t5/Using-your-ReadyNAS-in-Business/Shutdown-rules-on-ReadyNas-Duo-V2-arm-with-connected-APC/m-p/1508811/highlight/true#M142436
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One thing you could do to test your monitoring (either SNMP or UPS) is to connect the equipment to the main power temporarily, and then connect a test load onto the UPS (a fan, or anything that uses a fair amount of power).&nbsp; Then disconnect the UPS from the main power, and wait for it to completely drain.&nbsp; You can then confirm that everything shuts down cleanly.&nbsp;
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