User Manual

Calculate Recording Capacity
NVR User Manual
117
Appendix B Calculate Recording Capacity
The recording capacity is mainly up to the record resolution, record stream and bitrate.
Different image quality parameters decide different disk capacity occupation in equal times.
The bigger the record resolution, record stream and record bitrate is, the more disk capacity is
taken up in equal times. The calculation format of recording capacity is shown as below.
Recording Capacity(MB) = Bitrate(Kbps) ÷1024 ÷ 8 × 3600 × Recording hours per day ×
Record Storage Days × channel numbers
3600 means record for an hour(1TB=1024GB，1GB=1024MB，1MB=1024KB，1Byte=8bit).
Record Bitrate
(Kbps)
Used Space
(MB/H)
Used Space
(MB/D)
10240
4500
108000
8192
3600
86400
6144
2700
64800
4096
1800
43200
3072
1350
32400
2048
900
21600
1024
450
10800
768
337.5
8100
512
225
5400
384
168.75
4050
256
112.5
2700
The table below shows the recording capacity requirements for record storage in 30 days.
Record Bitrate
(Kbps)
Recording Capacity(TB)
1CH
4CH
8CH
16CH
32CH
64CH
10240
3.09
12.36
24.72
49.44
98.88
197.76
8192
2.48
9.89
19.78
39.56
79.11
158.21
6144
1.86
7.42
14.84
29.67
59.33
118.66
4096
1.24
4.95
9.89
19.78
39.56
79.11
3072
0.93
3.71
7.42
14.84
29.67
59.33
2048
0.62
2.48
4.95
9.89
19.78
39.56
1024
0.31
1.24
2.48
4.95
9.89
19.78
768
0.24
0.93
1.86
3.71
7.42
14.84
512
0.16
0.62
1.24
2.48
4.95
9.89
384
0.12
0.47
0.93
1.86
3.71
7.42
256
0.08
0.31
0.62
1.24
2.48
4.95
For instance, there is a 32CH NVR recording 24 hours per day and the record stores for 30
days. The NVR adopts dual stream recording. The main stream is 4096Kbps and the sub stream
is 1024Kbps, then the total recording capacity is 49.45TB (39.56TB + 9.89TB).
Considering the format loss of the disk is about 10%, the required disk capacity will be 55TB
(49.45TB ÷(1-10%)).