I have a dual 2600 motherboard in a P4000 case with a 750W power supply. There is only one PS, the other one is not populated. I have the system powered with a UPS, an APC Back-UPS PRO 1500. Normally the server is drawing around 120W, well under the UPS max draw.
When the power goes out and the P4000 is powered by the UPS the system fans keep ramping up and down and the system clocks down from 3GHz to maybe 300-400MHz. The system is unresponsive due to the low clock speed and hard to power off manually.
Is the P4000 not liking the stepped sine wave from the UPS? Perhaps PFC causing output problems? I see that APC makes a pure sine version of the Back-UPS PRO, would that fix the issue?
Thanks,
Folsom
When the power goes out and the P4000 is powered by the UPS the system fans keep ramping up and down and the system clocks down from 3GHz to maybe 300-400MHz. The system is unresponsive due to the low clock speed and hard to power off manually.
Is the P4000 not liking the stepped sine wave from the UPS? Perhaps PFC causing output problems? I see that APC makes a pure sine version of the Back-UPS PRO, would that fix the issue?
Thanks,
Folsom