DVR Storage Calculator

Use the form below to calculate the approximate amount of hard drive disk space you'll need in your DVR to record based on the selected settings. We've chosen a typical configuration to get you started: H.264 DVR, CIF (352x240) resolution, standard quality, with 4 cameras, recording at 25 fps, 24/7, and 30 days of playback.

Camera Stream: H.264 (DVR SYSTEMS)
Camera Resolution:
QCIF (176x120) 1 Megapixel (1280x1024)
CIF (352x240) 2 Megapixel (1600x1200)
4CIF (704x480) 3 Megapixel (2048x1536)
Video Quality: Highest Medium Standard
Average Frame Size: KB

Number of Cameras: -10 -1 +1 +10

Frame Rate per Camera: FPS
Hours Each Camera Will Record per Day: Hours Per Day
Desired Storage (Number of Days) per Camera: -10 -1 +1 +10

Total Bandwidth Required: Per Camera:

Estimated Storage:


  • 1 frame per second is the lowest frame rate recordable and 30 frames per second is the maximum which is real time
  • There is no real need to record in real time unless there are regulatory reasons as in case of government facilities or casinos
  • Recording at 1 frame per second is what traditional analog systems record
  • At 3 - 5 frames per second recording you will not miss any activity (remember this is per second)