Our Powerconnect 2716 hangs as soon as UPS switches to emergency power supply.
Tested 3 different UPS's (APC Smart-ups 1400, APC 700, Fiedeltronik Ares 3000) - no difference.
Also tried connecting a dedicated UPS for 2716 - no difference.
Any other devices connected to these UPS-es work fine when on emergency power supply...
I run out of ideas... Anybody encountered problem like this?