Which Dahua nvr are you using.? Which poe switch?
Pros and cons? Are you happy with your setup.?
Using an NVR5216-4kS2 with (2) 4TB WD Purple hard drives. Gives me plenty of storage, and is rock solid. The switch is a TP-Link 8-port POE+ switch and that has been rock solid too. With the external POE+ switch setup I can position it in an easily accessible location to terminate all the Cat5e wiring from the outside cameras. The NVR is located in a convenient and secure location away from the switch. Accessing the video for either live or playback can be done using for the most part, SmartPSS on a computer and TinyCam Monitor Pro from my cell or tablet. Of Course, all cams/NVR are blocked from accessing the Internet so I use OpenVPN to access them when away from home.