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Things About Redundant Backup Systems

2019-12-27

With the continuous expansion of the city scale, the command center plays an increasingly important role in coordinating and handling emergency security incidents and strengthening the rapid response capabilities of public safety. Modern command centers usually have multiple channels of important signal access and output. These signals will inevitably have problems in transmission. Therefore, the introduction of redundant backup technology is very important. When the main equipment or system fails, it is very important to be able to automatically detect and switch to the standby system. If it cannot be automatically detected and switched, the backup system is useless. Real redundant backup technology must ensure that when the main system fails, services can be smoothly switched to the backup system. Such redundant backup is effective.


Tricolor Technology's multi-functional integrated signal processing platform Cronos and professional splicing controller AP4 has such a smoothly switchable backup system, which can automatically detect equipment failures and switch quickly, and the viewers won’t feel anything unusual.


  • What is a redundant backup design?


Redundant backup is where the system or equipment plays a key role in completing the task, adding more than one set of functional channels, working elements or components that perform the same function to ensure that when the part fails, the system or equipment can still work normally. To reduce the probability of system or equipment failure and improve system reliability.


In real life, there are some common redundant systems, such as heavy trucks for cargo transportation. On the truck's heavy rear tires, there are at least two tires on one side of any bearing. Only one tire is required, and the heavy truck can run normally. One tire is equivalent to a redundant backup system.


  • What backups can we do?


 a. Input and output port backup

 Cronos and AP4 support devices support input port devices as backup inputs. You can set all the input or output ports of the device or some input and output ports to the backup input or output state according to the actual user requirements.


The input ports are backed up. After the master and backup states are set, a “tacit understanding” can be created between the main and backup input ports. When the main input port fails, you can switch to the backup input port for signal acquisition, and the corresponding output signal can maintain stable output. There will be no output interruption.


 The output ports are backed up. After the active and standby states are set, the two output ports of the active and standby ports can output two completely consistent video images. If the back-end device supports automatic switching between active and standby ports, the active and standby switchover of the link can be implemented.


  b. Dual host backup

Two Cronos or AP4s with the same configuration can be configured for dual-master backup. At this time, the master and backup data will be synchronized. When the master or backup device is operating, the status of the two devices will be automatically synchronized. After the link to the master device fails or the master device fails, the system will automatically switch the backup link to ensure system stability.


  • Can port backup and dual host backup be used at the same time?


For two Cronos or AP4s with the same configuration, we support the backup of the port settings of the input and output ports. At the same time, the two backup modes are freely combined to achieve more complex backup links and ensure the stability of the system in real-time.


  • Does the KVM backup system support redundant backup?


At present, our KVM system supports dual-host redundant backup. With two Cronos with the same configuration, KVM system backup can be achieved. When any one of the main KVM links fails, the backup link can be automatically switched for transmission and control. For the operator, it will not interfere with any of its current operations or even discover that the main link of the device is down, and the backup link is now enabled.


  • What is the speed of active / standby switching?


Regarding the switching speed of the active and standby links, the following is a real scenario during our test:

            A: After you turn off the main link or the main device, let me see how the switch works?

            B: OK

            A: Are you unplugged?

            B: Unplugged!

            A: When did you pull it out? I didn't see it at all.


No one can predict what will happen at any time in the future. Maybe when we build the command center, the main equipment has not failed once, but there may also be fatal unrepairable failures when we do not make backups. Who dares to bet on it? Or obediently do a good job of the redundant backup system. Although it will cost more money and manpower, it is worth it. The new redundant backup system is worth choosing.