iTECH2

CCTV

How much CCTV storage do I need for 30 days?

Calculate a first estimate and check usable recorder capacity.

By iTECH2

Estimate from the recorded bitrate

Eight cameras averaging 4 Mbps each produce 32 Mbps in total. At continuous recording for 30 days, that is about 10.4 TB in decimal units before overhead or redundancy. Replace those example numbers with the expected bitrate for each camera.

Check the installed system

Motion recording and variable bitrate can change storage use. Compare usable storage after redundancy, then verify the oldest retrievable clip once the system has run long enough.

CCTV workflow
  1. Count cameras
  2. Estimate bitrate
  3. Set retention
  4. Verify playback

Checklist

  • Count cameras
  • Estimate bitrate
  • Set retention
  • Verify playback

Frequently asked questions

Does live viewing use recording storage?

A separate live stream can use bandwidth without adding storage if the recorder does not save it.

Sources

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