When we speak of contingency, it is inevitable to refer to the concept of high availability. Currently, companies require that both your applications and your data are operational for clients such as employees. We must not forget, in greater or lesser extent must be capable of providing an adequate service level. Therefore, high availability with the technological assets, systems that business gear, operate where fallen, for example: communications. Without communications networks, as employees we could not perform operations daily and necessary, as access to: Internet, applications, in the event they require remote validation, or to send an email. On the other hand our clients could not access the online services. In addition, companies, typically have a network of interconnected offices. As a solution, companies, in the case of a mains failure, have: contingent and independent networks.

In this sense, it also tends to recommend hiring network redundant with another CSP. (Communications service provider.) Load balancers. It is the way in which Web requests are distributed over a row of servers, so that they are managed and distributed applications for a large number of users, so don’t overload the resources of the company. Storage of information: companies should also ensure that information can be recovered at the time that is needed, to prevent their loss or blockage, either by an attack, human error, or situation fortuitous or force majeure. Some of the solutions for the storage of information can be: RAID storage systems: redundant array of independent drives that is like an array of hard disks interconnected and whose peculiarity is that they behave as a single disk. Alternative data processing Center: the storage is dedicated and real-time data replication is used to pass data from the production site to the recovery site before an contingency. Systems/applications: Administration and configuration of applications/systems, requires a big work of configuration and management companies.