Can't help with what you're looking for - but I have one location where the main NVR (the important one, decent spec) is well hidden - and then have a second NVR (budget brand, small HDD) in a fairly easy to see prominent location. All cameras are added to the main NVR, and again to the second NVR, as all cameras are IP and on the network. If someone happens to break in, sees the screen and the cheap NVR and does a runner with it, the main NVR has done its job, and it's unlikely the intruders will go looking for a 2nd NVR if they have one under their arm running down the road. That might not do what you want to do - but there's more than one way to skin a cat.