How long the camera of beauty training school can be kept depends on the hard disk capacity. The content recorded by the camera is about 7G a day, depending on how many channels the school monitors. At present, the content of a 2T(2000G) camera with large storage capacity is stored for about half a month.

Theoretically, if the hard disk is large enough, the camera monitoring data can be permanently saved. Video will not be deleted automatically, and the oldest video will be automatically overwritten when the hard disk is full.