Customers spend a lot of money on wireless wifi security cameravideo surveillance systems and must ensure efficient recording, storage, and on-demand access to real-time video or video recording services. To achieve this goal requires a lot of high-performance independent components such as smart cameras, networks, storage (edge, external), Internet connectivity, displays, and video management software (VMS) and so on.
In this article, we will focus on the video surveillance architecture, which provides highly available storage and access to live and stored video content.
In an alternative method of storing video, edge storage is the only way to be free from network failures. This makes edge storage an essential storage method. However, there are still some limitations:
1. Edge storage capacity is limited.
2. The marginal media content is short, with only a few thousand hours of continuous recording time.
3. Most pan& tilt ip cameras are not safe, and the camera’s physical damage may result in catastrophic loss of edge storage content.
With the development of storage and compression technologies, the limitations of 1 and 2 will no longer exist. However, ensuring camera security will be a challenge for many installations.
Safe external storage
Therefore, the video must also be stored in secure external memory. This architecture uses edge storage to fill in missing content caused by network and external storage outages. With the improvement of edge storage technology, more content loss problems can be solved, but we may always need an external storage.
We define “external storage” as a set of solutions, including storing video and providing all software (including VMS) to access these videos.
Visit live and recorded video
All monitoring solutions need to provide access to live and recorded video. Accessing real-time video can be achieved through external storage or directly via a camera. The two are basically the same. Direct access to real-time video through the camera is a higher-availability solution with minimal requirements on other components in the system.
Currently, the solutions on the market basically use one of the above two methods to access live video.
Due to the limited capacity of edge storage and low physical security camera outdoor, it is now necessary for external storage to satisfy all requests for archival video. Therefore, we need a system architecture that is completely independent of external storage.
For high availability, external storage must use a redundant architecture. Ideally, the independent components that make up the external storage – storage media, associated hardware and software (including VMS components) should be individually redundant and intelligently interconnected.
However, the solutions on the market tie these components together. Failure of a single component can cause external storage to fail. For example, a server hardware failure causes VMS component failures and storage failures.
These solutions for the market can be achieved by adding additional external storage components during component failures.
If these additional devices continuously replicate the master device, the access gap will be minimized and the archive access will not be affected during the master device outage. This is the idea behind double recording. To meet the cost budget, these additional components can be configured to store sub-sampled (frame rate, resolution) video content. A small number of additional components can support concurrent interruption of all major components. Supports one-to-many redundancy.
Continues to rise for double recording demand
Most cloud storage ip cameras cannot be physically protected and video content generated by the camera must be stored externally. Many VMS solutions use external storage to handle real-time video access requests. Edge storage currently limits edge archive access. Therefore, external storage is also used to process archive access requests.
Therefore, the wireless security camera monitoring system will eventually over-rely on external storage. DR provides an intelligent way to increase the availability of external storage. With the advancement of edge storage, it will be able to better support archive access requests. VMS software needs to evolve to use this function subtly
Post time: May-22-2019