CCTV storage calculator
How many terabytes you need to record your cameras: enter the number of cameras, bitrate, hours and retention days. Free, no sign-up.
How much disk you need to record your cameras for the number of days you need. The calculation uses only the values you enter: you will find the bitrate in the camera or recorder settings.
Result
Disk space needed–
- With a 20% margin for system and contingencies
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- Data recorded per day
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- Bandwidth to the recorder
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Values in decimal units, as on disk labels (1 TB = 1,000 GB). Operating systems show binary units, which look slightly smaller. With redundant RAID, usable space is lower than the raw capacity of the installed disks.