Camera powering question (Redundancy)

[thmaxxer 0]

I have a re-branded Hikvision 16ch 4K NVR comparible to the DS-7608/7616NI-K2/8P. So far I like it coming from a Swann system, but my issue is the units internal power supply quit on me already. (4 months of 24/7 use) Typical ebay seller is beginning to give me the run around about the issues, etc. My plan is, once I get a new power supply for the NVR, I'm going to power as many cameras as I can with an AC adapter to ease the load on the internal PS of the NVR. I have a strange feeling that had something to do with the failure. (even though it shouldn't) I have mostly Swann and Hik domes, some with audio, and 4 mini PTZ's that get moderate use during night. Nonetheless, I do have 16 cams powered at all times, and almost all 16 have the IR on when it's dark.

 

My question is about redundancy. My NVR is on an UPS, if I power cams externally (using AC adapter) unless I tie them all into the UPS as well, they will go dark if external power is lost. Obviously this is an issue. If I have the POE enabled in the NVR itself for those specific cams AND have them plugged into an external power supply which one would they pull power from when everything is normal? (POE and external power is present) Is there any way to know? Also if power was lost, would it switch over the the POE to stay on?

 

TIA

[tomcctv 190]

Hi. Would it not be easier to use a POE switch

[thmaxxer 0]

It sure would be, but I already have about 20 power supply's all 12V 2 amp laying around, and last time I looked at a 16 port POE switch, it wasn't cheap. I'm just disappointed that the Hikvision PS already dumped. I went to Hikvision from Swann for flexibility and compatibility, but it can't be at the cost of reliability. Maybe I just got a bad one.

[jeromephone 6]

sometimes you just have to pay the price. POE switch and larger UPS sound like the way to go. If it is worth protecting spend the money rather than try to cobble something together.