UPS low battery value

[cruz4221]

Hi there,
My USP service has set the low battery value to 95
battery.charge.low: 95
How do I lower it?
Thanks

 

[Forza]

I've experienced the same thing. A brief power outage sent the server offline =(

Also it is important to turn the UPS off so it resumes power once the power is back on.

 

[cruz4221]

Unforntetly I wasn't able to adjust it, and I don't think it's even possible.

 

[elvisimprsntr]

Some of those variables are programmed into the UPS and can be changed.

If your UPS is connected locally to TrueNAS, the following command will tell you which parameters the driver thinks are modifiable.

Code:

upsrw {upsname}@locahost

For more information

Code:

man upsrw

 

[Forza]

How does TrueNAS react to the the UPS reaching low battery warning? I had a power outage event and TrueNAS seemed to have stopped almost immediately even though upsrw says battery.charge.low=20.

 

[elvisimprsntr]

Did you configure any Auxiliary Parameters in the UPS Service configuration?

If you have a bad or old battery, the charge level will immediately drop below the threshold triggering a shutdown.

How long has the battery been in service? More than 5 years is pushing it.
Does the UPS support a self test? You might want to perform a UPS runtime test.

 

[Forza]

Did you configure any Auxiliary Parameters in the UPS Service configuration?

If you have a bad or old battery, the charge level will immediately drop below the threshold triggering a shutdown.

How long has the battery been in service? More than 5 years is pushing it.
Does the UPS support a self test? You might want to perform a UPS runtime test.

It is relatively new and I've recently done run-time testing and it easilly lasts 30 minutes or more.

 

[Spearfoot]

Hi there,
My USP service has set the low battery value to 95
battery.charge.low: 95
How do I lower it?
Thanks

A setup that may work for you, without having to tinker with the battery.charge.low setting, would be to select a Shutdown mode of UPS goes on battery with a suitable value for Shutdown timer. I use 150 seconds for this, so my server shuts down 2 1/2 minutes after the UPS switches to the battery, which I've found to be 'good enough'.

I wrote a UPS resource several years ago that covers some of the basics, available here:

Configuring UPS support for single or multiple FreeNAS servers

If you are running a FreeNAS server you definitely need to connect it to a UPS. Standalone Configuration You should read the FreeNAS UPS service documentation for your version of FreeNAS before proceeding. The instructions below are specific to...

www.truenas.com