If it ever happened to you that when you entered a website you see the platform is Out of service It is because the network structure of the server does not have a high availability design.
This can happen not only because the service has crashed due to operational errors, power outages or environmental conditions, but also because it is under maintenance.
To solve this problem, and ensure that all users have a 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 what use does it have in computing?
When designing computer networks Users must be able to enter it to update activities or carry out any type of work. Therefore, it is necessary for the structures to have a protocol to guarantee continuity in transfer operations, which means that contingency plans must exist 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 normally.
When users cannot access the network, it is called that the service is not available, being the time of inactivity the variable that is used to establish what is 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, you must have a protocol that you can replicate all the components for the system to work properly. Also to be considered as an important feature the ability of the design to quickly find the fault.
At the same time, it is necessary to be able to apply the security protocols so that the system can solve the problem using other components that do not harm the operational capacity of the network. Other characteristics that a high network design must meet availability is that it has to be resistant to DDOS attacks. That is, it must bear the "Over demand" of unwanted requests to avoid overloading the servers and causing the system to be out of order.
Within the network design there must be a structure that is 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 there to be a high availability system 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 it can distribute the tasks on the different servers. This will be necessary to avoid saturation components and balance the load of data traffic, generating greater stability and manageability.