How do I calculate CCTV storage?

CCTV storage is calculated based on the number of cameras, resolution, frames per second, compression, recording hours and retention days.

Is H.265 better than H.264?

Yes. H.265 provides better compression efficiency, reducing storage needs by up to 40% compared to H.264.

How much storage does a 4MP camera need for 30 days?

It depends on frame rate and compression, but typically a 4MP camera at 15 FPS with H.265 may need around 3–4 TB for 30 days of continuous recording.

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CCTV Storage Calculator

Number of Cameras Resolution Frames Per Second (FPS) Compression Scene Complexity Recording Hours Per Day Retention Days

Avoid Losing Important CCTV Footage

Incorrect storage planning may cause HDD overwriting, missing footage, slow playback, and system crashes.

✔ Correct HDD sizing
✔ Optimized bitrate configuration
✔ Proper retention planning
✔ Reliable surveillance-grade drives

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HOMSIST INDIA provides professional CCTV installation, DVR/NVR setup, surveillance hard disk planning, and remote monitoring solutions across Guwahati and nearby areas.

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