Redundant Power Supplies- Halt on failure

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MaLaCoiD

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Sep 23, 2014
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Is there a method to trigger a graceful shutdown when FreeNAS loses power to a redundant power supply?

I've got a Supermicro SC825 2U Rackmount Server case which has redundant Power Supplies. I've got a UPS with no USB data connection to signal power loss. I'd like to plug one PS into the UPS while the other PS is connected to a different source. So when the power is cut, only the UPS-connected PS will be active and the server will initiate shutdown.

I imagine the chassis would give some syslog or set a value when power fails- the chassis makes an audible alarm. Then I'd need something to notice that event and take action.
 

Ericloewe

Server Wrangler
Moderator
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Feb 15, 2014
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I'm sure this is doable and I'm confident it's convoluted as hell. You'd need to query the BMC.

Frankly, you're better off with an El-Cheapo UPS just for power monitoring. Hardly ideal, but workable.

I've got a UPS with no USB data connection to signal power loss
No RS-232 either?
 
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