HeadsUp 0 Posted July 10, 2016 I am evaluating an upgrade on a large site. The existing contractor "has left" after charging the client upwards of $ 1200 fitted for $ 35 analogue cameras of around incredible 380 TVL resolution. The site has 5 buildings spread over 40,000 square meters. There is already RG59 coax through most buildings for the existing analogue cameras , and underground conduit with spare CAT 5/6 between buildings and the head office building on the same site. My initial thoughts are to use between 5 to 8 1080P AHD varifocal cameras with IR per building . What are peoples thoughts on using a single 8 channel DVR in each building , then using CAT5 LAN connection from the DVR in each building to a main NVR in the security room ? the DVR would be dual stream capable to record locally simultaneously while giving 100% streaming to the NVR just trying to get the best image quality for the money. If we used IP cameras in every building then the cameras are a little more expensive and we dont get redundant storage capacity in each building . My thoughts for not going single NVR with a router in each building is that if our main NVR goes down then we have no video backup anywhere , whereas if we have individual DVR and storage in each building , we might lose the NVR or one DVR on reliability but we are likely to still retain 80 % of the system as active. Can this work ? , who can blow holes in it with something better ? thankyou Share this post Link to post Share on other sites