Shutdown on high temperature threshold

[CSchmitteck]

We have a SRV3KRI UPS with the network management card 3 installed. To avoid overheating the server rack ,we would like to shutdown the systems when the UPS is overheated. There is the event in the network shutdown on "UPS Temperature Overheated". 

What is exactly the threshold for that? Is there a setting to ajust that theshold?

[Teken]

You’ll need to contact APC Technical Support to receive a definitive answer as to the exact temperature value that declares this internal hardware fault.

Generally speaking, the value is approximately above 50 ~ 60’C+.

This temperature value is not user adjustable by the client at all. Based on the limited information you have provided it seems you’re looking for a band aid vs addressing the root cause which is poor ventilation and cooling?!?!

In the worst case scenario you can simply install some fans to promote air circulation and a modicum of cooling.

If this rack is literally just in a closet vs an actual large room no amount of fans will offset the buildup of heat once everything has reached full operational capacity.

If this is in a communication closet the best you can do is install an upper & lower vent grill on the door. Attach an exhaust fan to the top to help pull cooler air from the bottom vent and exhaust the trapped heat from the top.

I have never heard of anyone in a serious Enterprise environment purposely shut down the network hardware due to heat?!?! 🤦‍♂️

Questions Ask . . .

[CSchmitteck]

Thanks. No, there is no problem with the heat. When the AC is working the inside temperature of the UPS under 20 deg. But when the AC fails, the temperature with rise very fast. 50-60 deg. in 1hr. This happend on a sunday when nobody noticed it directly. We allready fixed the AC to switch on after power loss. But who knows what can happen.

I know there is a network card with a temperature sensor, but I think this will not fit in this UPS. That would also be the best solution as the UPS is in the bottom of the rack and you would be able to fix the sensor in a higher position.

Claus

[Teken · Accepted solution]

This specific model uses the small form factor NMC. None of them support the use of the AP9335T / AP9335TH sensors. 

Normally each rack would be individually monitored to track the overall temperature inside the unit.

Separate and independent temperature / humidity sensors would be installed where required for mission critical equipment and infrastructure.

All of data centres, rooms, and communications closet use local and network environmental monitoring. They incorporate old school mercury thermostats to LCD displays so no worries about a battery failure and not knowing the temperature / humidity at the point of use.

Next layer are hardwired 1-wire temperature & humidity sensors so no reliance on batteries. Last layer are environmental sensors that are POE powered and connected to dedicated switches / UPS. They measure temperature & humidity and all other variables such as pressure, AQI, VOC, CO2, etc

Everything is connected via SNMP for long term historical tracking.