Anabon field guides · Surveillance Knowledge
Storage, bandwidth, PoE budget and lens calculations for quoting commercial camera systems correctly the first time.
Add the spec-sheet maximum of every powered device, keep 20% headroom, and compare the total with the switch's printed PoE budget, not its port count. Includes the printed budgets of CASE switches and the bt-class PTZ rule.
Add up every camera's main and sub-stream bitrate, compare the total with the incoming figure printed for the CASE NVR (the AI-on figure if you use AI by NVR), then check the outgoing figure against remote viewing.
Standard PoE stops at 328 ft (100 m). This guide covers what extend mode, PoE extenders, SFP fiber uplinks and solar towers each change in link rate and camera power, with a distance-to-solution table.
Storage is cameras × bitrate × 10.8 GB per day × days, plus headroom. Worked examples for 10 to 80 channels against the printed drive limits of CASE NVRs, with the codec and retention decisions that change the answer.
