ML350 G6 POwer failure while switching to USV / USP

[scottbert]

Hello !

I have upgrade an ML350 G6 with an external USV / USP manufactured by APC (Model APC Back-UPS 950VA).

The USV/USP is connected via an USB cable and the software PowerChute is running on the server.

The selftest of the APC USP is okay and the battery have a capacity of 100 percent. The Server uses averagre 85 Watt.

The Power supply of the Server is an 460Watt power supply.

Now if the APC switches to battery mode without AC Power and the server power off directly. an hard power off.

Has anybody the same failure and a good idea to solve the problem ? Should i take another USP ?

Thanks in advance..