Establishing security in the organization's network environment and creating peace of mind in the work environment for network users is one of the most important issues, and for this reason, redundancy or redundancy is understood.
What is Reidant?
Redundant in the world of Farsi language means extension and redundant and redundancy from the root of these words. In fact, it undertakes the multiplication of components to increase the efficiency of a system and assures users that they will not experience any server outages in their communications.
In order to establish a safe environment in the field of communication, Redundancy creates a secure triangle so that this environment can perform its task in the best way.
These three sides of security are:
Implementation of necessary policies and policies for Availability, Confidentiality, Integrity, which are the opposite of Denial-Destruction and Disclosure.
To create each of these sides, a set of actions and processes must be carried out in each of the hardware and software areas, and the issue of Redundancy is related to the Availability category. In the field of networking, it actually means creating and providing a platform that plays an auxiliary role when necessary.
What is redundancy?
Redundancy can be defined as the source of service, that is, prepare a service provider completely similar to the main service provider, so that when the service provision from the main source is not possible for any reason, the auxiliary service provider will act quickly.
Elsewhere, in the topic of data transmission, the redundancy of resonance has caused additional data to be attached to the original data and it is sent so that in case a part of the data is lost and a possible error occurs, the data can still be recovered, also in the direction of websites and applications. Redundancy can be used.
Redundancy in the field of network
When the concept of redundancy is implemented in the network, the hardware failure of the unit or one of the key equipment of the server does not disrupt the network's performance, and this is why advanced and leading companies pay special attention to the principle of equipment redundancy when preparing servers. This feature can be in the communication path between systems and cause the addition of an alternative and spare path between two nodes or workstations in communication networks.
Redundancy in connection with the server is a similar version of the main server to which all communication lines and network devices are connected, and when the main server fails for any reason, it is able to play the role of the main system in the organization's network space.
In other words, when there is a failure in the server, the requests are directed to the same server and the service is provided without stopping, and Redundancy is implemented to ensure the complete performance. Despite Redundancy, you can be sure that your service to your users will not be interrupted when a device becomes unavailable in the corporate network.
Most server hardware components have the ability to support the concept of redundancy, and sometimes you are inadvertently using equipment redundancy. For example, when you install a few terabytes of main memory on the server so that applications can run easily, you have done redundancy in relation to the main memory without knowing it.
The implementation and design of the network with the principle of redundancy will naturally have a lot of costs compared to the normal network setup, and of course the existence of unnecessary redundancies will cause the costs of your organization or company to increase unnecessarily, the design of the personal network structure requires specialists in this sector. to maximize your expenses. Specialists in network design should identify the sensitive and strategic points in the network and make sure for the users that the necessary measures will be taken if the services are unavailable.
Benefits of implementing redundancy in the network
Data accuracy:
If the data is stored in several different places, it is possible to validate the data by data management systems.
Help to maintain and maintain data:
The risk of data loss is reduced due to the existence of a duplicate and alternative server or element
Increasing the speed of data recovery:
Due to the preservation of data, data recovery is easily done when a failure occurs.
Disadvantages of using redundancy in the network:
Need more space:
Redundancy implementation in the network due to the doubling of network equipment such as servers, it takes more space to implement the network in the normal way.
More cost:
The need for more space to set up the principle of redundancy means an increase in equipment supply costs. In addition, the cost of providing more resources to maintain the equipment will also be added to the initial cost.
Data corruption:
Storing multiple copies of data increases the possibility of data corruption. These failures can occur while reading, writing and processing data.
