Manual

Appendix B Calculate Recording
Capacity
121
The recording capacity is mainly up to the record resolution, record stream and
bitrate. Dierent image quality parameters decide dierent 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.
For instance, there is a 32CH DVR recording 24 hours per day and the record
stores for 30 days. The DVR 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%)).
The table below shows the recording capacity requirements for record storage in 30 days.
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
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