How to recover from damage to hard disk data?

Video surveillance hard disk due to its 24-hour uninterrupted, high-load work of special nature, making its life not long, and because of its data storage capacity constraints, in use, the original data is constantly being erased and covered by the newly recorded data . Anyone who understands the principles of data recovery knows a bit that this constant erase and overlay data is the least recoverable at the current level of data recovery technology.

At the same time, because the hard disk space is limited, the image is continuously captured at 24/7 hours during monitoring. After a period of time, when the capacity limit set in advance by the hard disk surveillance video recorder is reached, the new video will overwrite the old video, and the cycle will be generated again and again. cover.

At present, the video surveillance data recovery technologies we have mastered are also effective for some of the data that are considered to be covered. Most of the video information that is covered by new content loops can be recovered by the technology. In view of different situations, the amount of information that can be recovered can be restored. Also different. According to the analysis, we can understand whether the surveillance video is covered by the cycle information, and estimate the success rate of data recovery. However, due to the cumbersome and time-consuming task of this work, the entire analysis process is often longer than the process of video surveillance data recovery. This has affected the overall recovery progress to a certain extent, and even worse, it takes several days to analyze the data. In the end, the conclusion that it could not be restored has not only delayed valuable time, but also wasted the effort of the technicians.

So how to restore the surveillance video automatically covered?

The professional monitoring and recovery software can basically achieve the automatic coverage recovery of surveillance video. Its technical principle is based on the original video recovery technology, and then introduces the latest technology to form a recovery software for surveillance video. It has powerful functions and high recovery success rate.

One of these technologies is the SDII technology in the United States. The SDII video surveillance data recovery technology eliminates the intelligence of existing data. The data analysis technology and image time analysis technology are used to physically mirror the content that meets the requirements. Then the mirrored data is combined to form a new combination of video data. Finally, the combined data is completely rendered as a video or JPG still image, and finally the purpose of recovery is achieved.

Need to remind everyone that monitoring hard drive coverage information is not all can be restored, because the monitoring data coverage is disorderly, late input data, who do not know where to write specific hard disk, so whether it can take personal time The monitoring data of the segment is not 100% sure. Therefore, it is advisable to have special personnel to cooperate with surveillance cameras in the implementation of monitoring so that problems can be discovered in a timely manner. The surveillance video automatic coverage recovery method is almost the same as the general surveillance video recovery. The first is to have a suitable tool to search, download, install, and monitor the recovery tool. Then through the tool's scan of the monitoring hard disk, you can know whether there is a personal video. Video.

Since the hard disk plays a vital role in data protection, how can we test the quality of the hard disk now?

Listening and touching detection method

1. The so-called “hearing” is when the hard disk is in operation. If the robot arm is in poor contact with the hard disk body or if the arm loss occurs, it will find a “click” sound. The louder the sound, the harder it is to damage the hard disk.

2, "touch" is also in the case of hard disk operation under the touch, touch the hard disk motherboard there is no special heat, the second touch hard disk vibration is not large.

Both of the above methods are estimated without actual evidence to prove whether the hard disk is really good or bad.

Software detection

HDTune is a small and easy-to-use hard disk detection tool software, HD Tune Pro is also a suitable for mobile hard disk detection tools. The main functions are hard disk transmission rate detection, health status detection, temperature detection and disk surface scanning. In addition, the firmware version, serial number, capacity, cache size, and current Ultra DMA mode of the hard disk can also be detected. Although there are other softwares for these functions, it is commendable that the software integrates all these functions, and it is very compact and fast. More importantly, it is free software and can be used freely.