Monitoring data is written in 7×24 hours, and the storage time ranges from 7 days, 15 days ... even to 1 year, and the data volume increases linearly with time.
The main factors that determine how long it can be monitored are:
(1) Different industries have different monitoring retention periods.
(2) The duration, capacity and clarity of monitoring records will be different with different storage methods.
Storage devices can be roughly divided into three types: digital video recorder (DVR), direct attached storage device (DAS) and network attached storage device (NAS).
Question 2: How long can the video of the monitor be saved? If you are in a camera, a camera is about 7G a day, depending on how many channels you monitor, that is, the number of cameras is the largest. Take 24 channels as an example. 2T(2000G) for about half a month. If it is multiple hard disks, it will be converted by itself. General camera requirements will not be less than 7 days. Take care!
Question 3: How long can the monitoring records be kept? Usually about a month. Back up what is valuable once, and let it cover what is worthless. Generally, the estimation method is to simulate 5 G cameras and 8 cameras a day, 40 G 1 month, that is, 1 200 g, and the last 2T hard disk can be stored for more than1month. If the video you tune is of high quality, the hard disk of the network camera will increase by 1 times.
Question 4: How long can check-in records and monitoring be kept? Hotel check-in records are kept for a long time.
If it is long, it will be even longer in the public security system.
The preservation time of hotel monitoring is generally about one month, and some are less than one month. Because the surveillance video file is relatively large, the earliest surveillance video will be automatically deleted when the hard disk is almost full.
Question 5: How long can the monitoring records be kept at most 100 minutes? It depends on where the monitoring records are stored. If it is a * * * department, it is usually more than three months. If it is a hotel or community, it is different. If it is your own computer monitoring and recording software, it depends on the storage size you set. When the storage space is full, the previous videos will be automatically deleted.
Question 6: How long can video surveillance records be kept? The storage period of video surveillance video is related to many factors:
1, what is the capacity of the storage device (common video recorders include hard disk video recorders, home video cameras with SD card /TF card storage function, and now there is charging cloud storage).
2. How many videos shot by the camera need to be saved by the storage device. (The more cameras there are, the shorter the period for naturally storing videos. )
3. The compression ratio, format and resolution of the camera. Cameras are divided into analog cameras (how many lines the camera is divided into, CVR or AHD) and digital network cameras (how many pixels are divided into, ultra-low illumination, lens size, ordinary or starlight level, etc.). And whether the compression ratio is h.264 or H .265).
4. Video parameters of video recorder
Oh, I am too lazy to write. Just ask the master who installed the camera for you to calculate how many videos you can record.
Question 7: How long can the monitoring records of the Public Security Bureau be kept? Urgent! It is usually a month's supply, depending on the local monitoring input. You'd better ask the local public security bureau for details.
Question 8: How long can the monitoring records of your own home monitoring be kept? Look at the size of your hard drive.
Question 9: How long can the monitoring records be kept? Depending on the memory of the monitor, some places are not saved at all, and some places have been saved for several years.
Question 10: How to call up the history of surveillance video? How many days can a general record be kept? The video is determined according to the size of the hard disk. Eight-way video recording takes 1000g40 days, depending on the video quality. The better the quality, the more space it takes up.
The history of surveillance video varies according to the specific situation.