We have a HP DL360 G6 server connected to APC Back-UPS 1100 (BX1100CI-RS). The server sometimes unexpectedly reboots (administrator gets the "select the reboot reason" window after logon). According to UPS s/w PowerChute Personal Edition, only some electrical noise was detected an hour before the reboot.
Is there some kind of power supply logging to make sure what's going on with PSU?