The advent of network cameras has changed the face of storage solutions in the security industry. As surveillance systems move to network-based systems, the choice of recording and storage is no longer clear. Today's storage solutions include network hard disk recorder NVRs, edge storage and cloud storage solutions. By first distinguishing the advantages and disadvantages of each option, system integrators need to assist customers in selecting the best recording and storage solution to meet their requirements.
Network storage solutions on the market include PC-based network DVRs, stand-alone network DVRs, edge storage and cloud storage. With this trend, IHS has predicted that in 2013, network storage will account for more than 30% of global video surveillance storage revenue. As the second half of the year goes by, the market will witness its development.
Choosing the best storage solution is critical. “Specially designed storage systems for the unique needs of IP video surveillance can provide a more powerful, scalable and cost-effective solution. In addition, a specially designed storage subsystem can help customers get the most out of IP cameras. Advantages such as resolution and real-time monitoring.
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Network DVR NVR
advantage
Network hard disk recording NVR machines can be PC-based or independent. Free choice of storage technology from different storage systems supported by Microsoft Windows or Linux. This way, system integrators or end users can choose the storage system that best suits their needs and budget. Network DVRs can be expanded and upgraded to meet storage needs, and the performance of the storage system can be tailored to the actual needs of the monitoring system. Finally, storage redundancy can be leveraged to ensure that the storage system is always online and that recorded data is not lost. Organizations with IT skills, adequate resources, and network infrastructure can optimally deploy network hard disk recorders. Regularly purchase network equipment and build relationships with IT vendors, which can leverage customer resources to share resources and expertise.
Disadvantage
In many cases, the video will not be recorded. For example, at the front end, if the camera connection fails, the video will not be recorded. If the back end of the recording or storage solution fails, the video cannot be recorded, which may be due to a system failure or routine maintenance. However, a failover recording solution can prevent this problem.
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Edge storage
advantage
Edge storage is recorded at the edge of the Ethernet, rather than streaming data across a network to a centralized network DVR. In essence, this concept refers to the ability to decentralize storage and spread between cameras. It works by recording video directly to a storage device, such as an SD/SDHC card inserted into the camera, a built-in flash memory, or a small hard drive. Edge storage offers another option for monitoring architectures. With low-bandwidth monitoring that supports high-quality local recording, users can optimize bandwidth limits and get high-quality video from event recordings for detailed investigation.
The three main advantages of edge storage are: decentralized storage, redundancy, and low bandwidth. Decentralized storage saves costs by eliminating the need for on-site servers, network drives, or computers for recording video. It provides failover recording if the camera loses its connection to the central server.
Disadvantage
Some people think that edge storage is unreliable because the camera can malfunction or be stolen. If all the videos are stored in the camera, this necessarily means that all the videos will be lost. In addition, there is a limit to the amount of video recording in edge storage, such as 7 days or even less, depending on the SD card capacity and recording settings. Therefore, this solution may not be entirely suitable for applications that require up to 30 days of video storage by law. In addition, end users often do not know that the SD card has a life limit, and if it reaches the end of its life, the video will not be recorded. Unfortunately, users often recognize this only after a video recording of an event has failed.
Other disadvantages include: if the network connection is interrupted, you cannot view the video recorded by the camera; you cannot control the video recording through the central recording server; and the challenges you may face in integrating with third-party solutions, such as access control to control event recording. Or building management. In addition, if there are multiple cameras, retrieval, video playback, and surveys may be slow, and storage retrieval from multiple locations is cumbersome.
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Cloud storage
advantage
Cloud storage is typically provided to the market in the form of Video Surveillance as a Service (VSaaS). This service enables end users to eliminate hardware investments because video and audio are stored and recorded in the cloud. VSaaS is a purchase service that pays a fee to a video service provider on a regular basis. On the other hand, camera investment and Internet traffic demand are declining. Outsourcing and storage outsourcing to service providers.
According to a new TechNavio research report, the market size of VSaaS is expected to grow to $1.6 billion by 2016, driven by video analysis software from vendors. The adoption of video analytics software will increase the value proposition of VSaaS.
Disadvantage
While low initial investment and low maintenance costs can attract many homes and smaller businesses, many security industry believes that cloud storage is better suited for smaller, non-high-security applications. “VSaaS is more popular among residential and smaller enterprise customers because it provides the flexibility of remote management, but data security and bandwidth challenges remain a major issue for medium to large organizations, where security is often the key Mission.†Brian Song, general manager of IDIS Europe, pointed out.
“There is a problem with the introduction of third-party cloud storage, and now there seems to be suspicion of private and potentially sensitive image data storage for service providers. Bandwidth still faces its challenges, especially when end users need full HD real-time. For monitoring and recording. For this requirement, “The transmission rate of each camera needs to reach 20 Mbps or more, and even if the network can support 1 Gbps, the image data can only be transmitted at a rate of about 600 to 700 Mbps, so the end user. It may be limited to up to 35 cloud service cameras, which requires network optimization.
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