•H.265 provides ~50% storage reduction over H.264 at equivalent quality. H.265+ (smart codec) can achieve 60–70% reduction with background modeling.
•Bitrates are estimates. Actual bitrates vary significantly with scene complexity, lighting conditions, and camera manufacturer tuning.
•Add 20–30% headroom to NVR storage for metadata, system files, and RAID overhead (if applicable).
•For RAID 6 or RAID 5 arrays, add additional drives per parity requirements and do not count parity drives in usable capacity.
•Network switch must support total bandwidth of 10.0 Mbps (0.01 Gbps) on NVR uplink.
•Motion-triggered recording accuracy depends on sensitivity tuning — budget for higher effective recording percentage during commissioning.