Appendix B Calculate Recording Capacity - Q-See QSD2316L User Manual

Appendix B Calculate Recording Capacity

Users can calculate the size of hard drive needed based on DVR recording settings. The DVR uses fixed video bit rate.
Below is the space used at different settings.
Video
Format
PAL
NTSC
For example, if a customer uses NTSC cameras, sets resolution to CIF, video quality to Lower, frame rate to 240fps for
16ch total, and he wants the unit to continuously record for a month, below is the calculation:
Storage used in a day: 112.5X24(h)X(240fps/30fps)≈21GB
Storage used in 30 days: 21X30≈630GB
So the customer must install SATA HDDs with 630GB capacity for it to record a month.
QSD2316L DVR User's Manual
Frame Rate
Resolution
Total(FPS)
CIF 25
CIF 30
Bit Rate
Video Quality
(kbps)
Highest 640
Higher 512
Medium 384
Lower 256
Lowest 128
Highest 640
Higher 512
Medium 384
Lower 256
Lowest 128
Storage Used
(MB/h)
281
225
168.7
112.5
56
281
225
168.7
112.5
56
103