Security DVR Storage Calculator

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How to use this tool

1. Enter the number of days of storage you wish to maintain on the hard drive
2. Enter the number of cameras on the system (typically 4-16)
3. Enter the frames per second (FPS) of the cameras. Typically customers choose to record between 7 and 15 FPS. Over 25 FPS is normally considered 'real time' but not needed for most applications
4. Enter the number of hours that your system will record each day. Using the scheduled recording and/or motion detection can dramatically reduce this time.
5. Enter the number of days in the week that your system will be operational. Again, scheduled recording will be important here.
6. The results will be in gigabytes. Note 1,000GB = 1 TB

Note: Frames per second must be per camera. If your DVR states it can record 120 FPS and you have 4 cameras, divide 120 by 4 to get 30 FPS per camera.

Note: This calculator utilizes MPEG4 compression at CIF resolution to make calculations. Also, 2-3 FPS will capture activity, but not in real time.