CCTV Storage & Bandwidth Calculator
Accurately size surveillance-grade NVR hard drives (WD Purple / Seagate SkyHawk) and switch backplane throughput. Compute exact gigabytes per day and total terabytes required for continuous or AI motion recording.
Understanding CCTV Storage & Compression Math
Surveillance storage calculations are governed by the relationship between raw sensor pixel resolution, compression efficiency, and dynamic motion duty cycles:
Why H.265+ Outperforms Standard H.264: Traditional H.264 streams encode repetitive background data (such as stationary brick walls or empty driveways) in full I-frames at regular intervals. Hikvision and Dahua Smart H.265+ algorithms analyze surveillance scenes, generating long Group of Pictures (GOP) intervals and referencing static backgrounds. This reduces storage consumption by up to 70% without sacrificing 4K evidential facial clarity.
Need Bespoke Commercial or Residential CCTV Sizing in Yorkshire?
We supply and commission 4K ColorVu IP systems, NVRs with surveillance-grade storage, and Cat6 cabling across Leeds, Bradford, Wakefield, Huddersfield, and surrounding towns.
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Gary Pearce • 25+ Years Experience • £10M Public Liability • CAI-Benchmarked Materials