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CCTV Calculator
Calculate required disk capacity for surveillance system. Includes resolution, codec and retention time.
Cameras
4
164
Override automatic bitrate
Recording
24h
1h24h
14 days
190
Records only when motion is detected
Results
Bitrate / camera
2.0
Mbps
Daily storage / camera
21.1
GB
Daily storage total
84.4
GB
Bandwidth
8.0
Mbps
Total storage (14 days)
1.15TB
(1181 GB)
Recommended disk
2 TB
Standard disk
Tips:
- Use surveillance-grade drives (WD Purple, Seagate SkyHawk)
- H.265 reduces requirements by ~50% at same quality
- Motion detection can significantly reduce storage usage
- For systems > 8TB consider RAID configuration
- Always plan for 10-20% capacity buffer