Video Surveillance Bandwidth & Storage Capacity Calculator
When we build a video surveillance system, we must calculate the hard disk quantity, then choose a suitable NVR (network video recorder), we need to concern both the recording capacity and max video channels of NVR.
You can quickly find the video storage capacity according to your video resolution, quality(bitrate) and recording time in the following table. If you don't know which video setting is suitable, you can choose our recommended setting:
3 Megapixel@25fps: 6Mbps;
2 Megapixel(1080P)@25fps: 4Mbps;
1 Megapixel(720P)@25fps: 2Mbps;
D1@25fps:1Mbps.
Video Surveillance Bandwidth & Storage Capacity Calculator
Video Setting
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Storage Capacity
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Resolution | Video Quality | Bitrate | 1 Second | 1 Hour | 1 Day | 1 Month |
3MP (2048*1536) | Best | 8,192Kbps | 1,024KB | 3,600MB | 84GB | 2.47TB |
Better | 7,168Kbps | 896KB | 3,150MB | 74GB | 2.16TB | |
Good | 6,136Kbps | 767KB | 2,696MB | 63GB | 1.85TB | |
Bad | 4,096Kbps | 512KB | 1,800MB | 42GB | 1.24TB | |
1080P (1920*1080) | Best | 8,192Kbps | 1,024KB | 3,600MB | 84GB | 2.47TB |
Better | 6,136Kbps | 767KB | 2,696MB | 63GB | 1.85TB | |
Good | 4,096Kbps | 512KB | 1,800MB | 42GB | 1.24TB | |
Bad | 2,048Kbps | 256KB | 900MB | 21GB | .62TB | |
720P (1280*720) | Best | 4,096Kbps | 512KB | 1,800MB | 42GB | 1.24TB |
Better | 3,072Kbps | 384KB | 1,350MB | 32GB | .93TB | |
Good | 2,048Kbps | 256KB | 900MB | 21GB | .62TB | |
Bad | 1,024Kbps | 128KB | 450MB | 11GB | .31TB | |
D1 (704*576) | Best | 2,048Kbps | 256KB | 900MB | 21GB | .62TB |
Better | 1,536Kbps | 192KB | 675MB | 16GB | .46TB | |
Good | 1,024Kbps | 128KB | 450MB | 11GB | .31TB | |
Bad | 512Kbps | 64KB | 225MB | 5GB | .15TB | |
2CIF (704*288) | Best | 1,024Kbps | 128KB | 450MB | 11GB | .31TB |
Better | 716Kbps | 90KB | 315MB | 7GB | .22TB | |
Good | 512Kbps | 64KB | 225MB | 5GB | .15TB | |
Bad | 384Kbps | 48KB | 169MB | 4GB | .12TB | |
CIF (352*288) | Best | 512Kbps | 64KB | 225MB | 5GB | .15TB |
Better | 384Kbps | 48KB | 169MB | 4GB | .12TB | |
Good | 256Kbps | 32KB | 113MB | 3GB | .08TB | |
Bad | 128Kbps | 16KB | 56MB | 1GB | .04TB | |
QCIF (176*144) | Best | 256Kbps | 32KB | 113MB | 3GB | .08TB |
Better | 192Kbps | 24KB | 84MB | 2GB | .06TB | |
Good | 128Kbps | 16KB | 56MB | 1GB | .04TB | |
Bad | 64Kbps | 8KB | 28MB | 1GB | .02TB |
Note: if you need Excel original table file, please contact with Sysvideo.
After getting the storage capacity, we can calculate the hard disk quantity as this formula:
= 1 channel storage capacity x cameras quantity / 90% / hard disk capacity
Note: after you format harddisk, you only can get around 90% useful capacity.
For example, we have 100 channels 1080P 2 megapixel IP camera, we need to record 1 month, we use 4TB hard disk, so the total hard disk quantity is:
= 1.24TB (from the above table) * 100 channels / 90% / 4TB=34.4 pcs. We need to use 35 pcs 4TB hard disk.
If we use Sysvideo 8 HDD ( hard disk drive) NVR SN7832, we need to use 35/ 8 = 4.4 sets, we need to take the nearest large integer 5.
In addition, we also need to consider the max channel capacity of NVR, SN7832 is 16 channels 1080P NVR, if we use this model, 100 channels IP cameras need 7 sets SN7832 (100/16=6.25, take integer 7).
We found we only need 5 sets NVR when we calculate the recording time, but when we calculate NVR max video channel, we found we need 7 sets NVRs, we need to choose a biger value, so the final solution is we use 7 sets Sysvideo 16 channels 1080P 8 HDD NVRs.
But we also have another lower cost choice, we can use 4 sets SN7832 + 3 sets SN7232, SN7232 is 2 HDD 16 channels 1080P NVR. We can get 4x8+3x2=38 HDD, it can meet the storage requirement, but the cost is lower.
Appendix:
Switch Configration
10M Switch
2048Kbps
5
1.2Mb/s
1024Kbps
10
1.2Mb/s
512Kbps
20
1.2Mb/s
100M Switch
2048Kbps
50
12.8Mb/s
1024Kbps
100
12.8Mb/s
512Kbps
200
12.8Mb/s
1000M Switch
2048Kbps
500
128Mb/s
1024Kbps
1000
128Mb/s
512Kbps
2000
128Mb/s