UPS protector not working? what do you mean?
Just mean that i do have ups protection but even with all the recomendation right it’s still not working the way it should, since the last time i also try 3 different harddrive all made for nvr, but still not working as intended.
Try taking it off of the UPS. Not all UPS are created equal.
Some cause more problems than they solve. Especially when you are looking at a situation where your HDD is in a 24/7 read/write cycle.
What is the firmware your system is on? What is the output of the NVR’s power supply?