The hard disk must adapt to the read-write, durability and other characteristics of monitoring video applications

With the construction of large projects such as Ping An City in China, the "blind vision" caused by long-term manual real-time monitoring requires image analysis technology such as face recognition, and begins to participate in the assistance of screening at the edge of data acquisition. However, the complexity of AI application poses a challenge to the random data reading and writing performance of storage devices.

Therefore, the control firmware of the hard disk must be optimized so that it can allocate the cache more efficiently, so that video data from different cameras can be written to the hard disk quickly and unimpeded. In addition, it is also necessary to take into account such factors as whether the cache capacity of video storage hard disk is sufficient, how many HD cameras can be supported, and whether the annual workload parameter (TB/year) can meet the demand.

Design of anti-vibration function and harsh working environment

Video monitoring hard disk is generally installed in the slot of NCR/DVR, NAS or external disk array. Because the hard disk will produce certain jitters in the working state, these jitters will be superimposed in the working environment of multiple hard disks, thus affecting the accuracy of hard disk reading and writing. If the situation is serious, it will cause errors in the data writing process, and may even damage the recorded data. Therefore, the video monitoring hard disk will have the rotational vibration (RV) sensor technology to compensate for the vibration impact caused by the adjacent drive or cooling fan.

With the increasing demand, manufacturers are constantly seeking breakthroughs

Nowadays, the rapid growth of global large data volume has promoted the transformation and progress of storage technology. At present, domestic and foreign hard disk manufacturers have launched a series of hard disk products for the security video monitoring industry.

Foreign manufacturers such as Western Data released two main products at this year's security fair: WD Purple SC QD 101 durability microSD memory card for terminals, and WD Purple 14TB HDD for edge servers, with AllFrame full-frame technology and AI support.

In the field of security storage, Seagate demonstrated the full-line security storage solution at the Security Expo and released 16TB Seagate Cool Eagle AI monitoring hard disk.

However, some domestic hard disk manufacturers began to fight for solid state hard disk in the following years when the core technology of mechanical hard disk could not be broken in a short time. SSD solid state drives with advantages such as fast speed, light weight and power saving have begun to rise, becoming a new opportunity for domestic hardware manufacturers to attack the storage market.

As the main force for the future development of storage applications, SSD solid-state hard disk has been listed in the public security video surveillance application standard, and this is also the first time it has been listed in it. It provides a better solution for the autonomous control of storage localization and information security, and provides a technical foundation for the storage localization of public security video surveillance.

Conclusion: In the face of new requirements in the era of intelligent security and big data, the capacity, efficiency, read and write performance, stability, reliability and energy consumption of hard disk are the most appropriate indicators to identify the eligibility of hard disk in the new era. In the future, in the monitoring hard disk market, domestic manufacturers can only achieve complete localization by constantly pursuing breakthroughs