NVR storage calculator

Estimate drive capacity or recording days for your camera setup. Enter camera counts, average bitrates and daily recording hours.

Recording assumptions

CalculateTarget recording daysRecording hours per day

Required capacity is video payload only. Add allowance before selecting drives.

Camera group 1CamerasMbps per camera

Up to 8 groups, 1–1,024 cameras per group. All groups use the same daily recording hours. For different schedules, calculate separately. Event recording needs measured data.

10.37 TB8 cameras × 4 Mbps × 24 hours/day × 30 days. Video payload before allowance.

Decimal TB (1 TB = 1,000,000,000,000 bytes). Excludes audio, filesystem overhead, reserved space and growth. Verify recorder drive limits and actual retention.

Choose a recorder and drives

Match the recorded camera count to NVR channels. Check drive bays, supported HDD models and capacity per bay; then allow for audio, reserved space and growth.

Get a Recommendation for this plan

Ask for an NVR and drive configuration. Your plan is added to editable quote notes.

The example above is available without JavaScript. Read the storage sizing guide for formulas and assumptions. Enable JavaScript to edit inputs and carry the plan into a quote.

Calculate the video payload first, then check the recorder’s drive limits and space available for video.