57 Road 1080P surveillance video requirements to store a month, how much hard disk space?
A camera according to the compression of an hour is roughly 2.2G, 2.2 by 24 hours 53G * 57 cameras more than 3000 G, 30 days 91000G or so, that is to say about 91T hard drive, HD quite occupied hard disk, 720P basic small half,
4 Road 500G to the top of more than a month, few have more than 7TB, you can look at Taobao looking for the camera to buy the shop side, you ask people, he will tell you.
Need 91T or so hard drive, high-definition quite occupied hard disk, 720P basic to a small half,
