If it ever happened to you that when you entered a website you see that the platform is Out of service It is because the network structure that the server has does not have a high availability design.
This can occur not only because the service has been down due to operational errors, power outages or environmental conditions, but also because it is undergoing maintenance.
To solve this problem, and ensure that all users can have continuous service, it is necessary to design a high availability network. If you want to know what it is about, keep reading.
What is a high availability network and how useful is it in computing?
When designing computer networks It is necessary that users can enter it to update activities or perform any type of work. Therefore, the structures need to have a protocol to guarantee continuity in transfer operations, which means that there must be contingency plans so that the service does not suffer interruptions or cuts in the event of a computer failure and users can continue to interact with the network as normal.
When users cannot enter the network, it is called that the service is not available, being the inactivity time the variable used to establish the degree of availability of the system.
Main Features What are the main features of this type of network design?
The most outstanding characteristic of this type of network design is that it can apply redundancy when there is a computer failure. That is, it must have a protocol that you can replicate all the components so that the system works correctly. Also to be considered as an important feature the ability the design must have to quickly find fault.
At the same time, it is necessary that it be possible to apply the security protocols so that the system can solve the problem using other components that do not affect the operational capacity of the network. Other characteristics that a high-performance network design must meet availability is that it has to be resistant to DDOS attacks. That is, it must endure “over demand” of unwanted requests to avoid overloading the servers and taking the system out of service.
Within the network design there must be a structure that be compatible with the possibility of incorporating other servers horizontally so that the system can support a growing demand for user work.
High Availability Network Components What devices are needed to create one?
For a high availability system to exist, it is necessary to have at least 2 devices. The first will be the main team, which will be in charge of providing the service continuously, while the second will be the clone of the first. This last component will have all the characteristics and powers so that it can work in the event of a failure of the first and thus not allow the system to be out of service.
If there is more than one clone, a cluster must be created so that the tasks can be distributed among the different servers. This will be necessary for avoid saturation the components and balance the data traffic load, generating greater stability and management capacity.
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