DVR Calculator Recording Capacity in Days or Hours Select Camera Resolution: CIF (360x240) 2CIF (720x240) 4CIF (720x480) Select Number of Cameras: Enter HD Storage (in TB or in GB): TB GB Enter Usable HD in (%):* % (< 100%) GB Usable* Select Frame Rate per Camera: 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 FPS Estimated Recording Capacity:*** Recording Capacity in Days** Best Average Worst Days Or Recording Capacity in Hours Best Average Worst Hours * Not all disk space is usable due to file system formatting. Calculator uses the GB Usable field in calculation. ** Assumes 24-hour continuous recording. *** Estimates based on the following conditions: Best - Good lighting, clean picture, low motion or activity. Average - Normal lighting, relatively clean picture, average motion and activity. Worst - Normal to poor lighting, picture has noticeable noise, or large amounts of motion and activity.