Operation Manual

DVR User Manual
73
Appendix B: Calculate Recording Capacity
You can calculate the size of hard disk according to the storage time and NVR recording settings. The formula
is as follows in full frame rate condition. Used space per hour (MB/h) = Bitrate(kbps) ÷ 8 × 3600 ÷ 1024. The
below are the details at different settings.
Resolution
Frame Rate
Bit Rate (kbps)
Used Space(MB/h)
3MP
1080P
30fps (NTSC)
12M
5400
8Mb
3600
7Mb
3150
5Mb
2250
4Mb
1800
720P
1080P
3MP
30fps (NTSC)
15fps (NTSC)
15fps (NTSC)
6Mb
2700
4Mb
1800
2Mb
900
1Mb
450
256Kb
113
960H
30fps (NTSC)
2Mb
900
1.5Mb
675
512Kb
225
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 sets resolution to1080P, frame rate to 15fps, bitrate to 4M and enables total 4
channels. He wants the unit to record continuously in a month. Below is the calculation:
Total Recoding capacity =900 (mb/h) X 24(hours/day) X30(days) X4 (channels)= 2592000 (MB)=2531.25(GB)
Therefore, customers just install one SATA HDDs with 3TB, it can almost record for one month.
Appendix C: Compatible Devices