CCTV Disk Calculator

We have calculated the approximate size of the disk required for CCTV systems. You can also use the Hikvision calculator to get a better idea of storage space at this link. 

This chart shows the approximate hard drive size required for 4x 2MP cameras, using the H264 video compression with continuous 24/7 recording. FPS stands for frames per second which is like pictures per second.

For H265 compression systems, the space required is halved.

	1TB	2TB	3TB	4TB	6TB
3 fps	14 days	29 days	44 days	59 days	172 days
6 fps	11 days	22 days	33 days	44 days	125 days
9 fps	9 days	18 days	27 day	36 days	68 days
12 fps	7 days	14 days	22 days	30 days	55 days
15 fps	6 days	12 days	19 days	25 days	55 days
18 fps	5 days	11 days	17 days	22 days	45 days
25 fps	4 days	8 days	13 days	17 days	33 days

 

 

This chart shows approximate hard drive size required for 4x 4MP cameras, using the H264 video compression with continuous 24/7 recording.

	1TB	2TB	3TB	4TB	6TB
3 fps	15 days	30 days	46 days	61 days	92 days
6 fps	14 days	29 days	44 days	59 days	89 days
9 fps	8 days	16 days	24 days	32 days	48 days
12 fps	6 days	12 days	18 days	24 days	36 days
15 fps	4 days	9 days	14 days	19 days	29 days
18 fps	4 days	8 days	12 days	16 days	24 days
25 fps	2 days	5 days	8 days	11 days	17 days