Owner manual

DVR User Manual
95
Appendix B Calculate Recording Capacity
Users can calculate the required size of hard disk according to the total recording duration and DVR recording settings. The DVR uses
fixed video bit rate. The below are the details at different settings for CBR.
Resolution
Frame Rate
Totally(FPS)
Video Quality
Bit Rate (kbps)
Used Space(MB/h)
1080P
25(PAL)/
30(NTSC)
Highest
12M
5400
Higher
9M
4050
Medium
7M
3150
Low
6M
2700
Lower
4M
1800
Lowest
1.5M
675
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 25 fps for enabling total 4
channels. He wants the unit to record continuously in a month. Below is the calculation:
Total Recoding capacity =675 (mb/h) X 24(hours/day) X30(days) X4(channels)= 1944000 (MB)≈1898(GB)
Therefore, customers need to install two SATA HDDs with 1000GB for one month record.