DVR User Manual
74
Appendix B Calculate Recording Capacity
Users can calculate the size of hard disk according to the saving time and DVR recording
settings. The DVR uses fixed video bit rate. The below are the details at different settings.
Resoluti
on
Frame
Rate (FPS)
Video Quality
Bitrate (kbps)
Used
Space
(
MB/H
)
1080P
1
2(PAL)/
15(NTSC)
Highest
12M
2700
Higher
9M
2250
Medium
7M
1800
Low
6M
1350
Lower
4M
450
Lowest
1.5M
338
The calculation format is:
Total Recording capacity =Used space per hour (MB/h)
(coverage rate of hard disk) × recording time (hour) ×channel numbers
For instance, one customer uses PAL cameras, set resolution to 1080P, video quality to Lowest,
frame rate to 12 fps for enabling total 8 channels. He wants the unit to record continuously in a
month. Below is the calculation:
Total Recoding capacity =338 (mb/h) X 24(hours/day) X30(days) X8(channels)= 1946880
(MB)≈1901(GB)
Therefore, customers need to install two SATA HDDs with 1000GB for one month record.