HA cluster to increase application availability

An important role in the protection of business-critical applications is played by high-availability clusters ("HA": High Availability). Based on the monitoring of the application and the required resources, clusters are able to independently initiate measures to restore the availability of the application. This is possible in both physical and virtualized environments.

Even in today's often virtualized IT landscape, the protection of business-critical applications has the highest priority. However, virtualization can only identify and proactively address issues related to the virtualization and server infrastructure.

If you want to protect the business-critical application with its data as such, you need to resort to an HA solution such as LifeKeeper from SIOS. LifeKeeper actively monitors the application with its components and attempts to resolve them in the event of a failure before failover to a second node. By using data replication, cost-effective HA clusters can be built.


Failover (by the failover English failover) is the unplanned change between two or more services in the event of a one-sided failure. As a result, the services can be kept highly available despite the failure of one of the systems. For failover to be automated and without the intervention of an administrator, it is necessary to use Cluster Manager software in our LifeKeeper case.


A switchover is a planned change from a primary system to a standby system, which is specifically initiated by a system administrator. For example, a switchover is performed to check the health of the standby system, or to temporarily make the services available on the standby during maintenance on the primary system.A switchover can be supported by a cluster manager software in our case LifeKeeper.

In cooperation with our partner CC-Dresden and the solutions from SIOS, we can provide you with the best and most competent assistance in protecting your business-critical applications.