Within a cluster setting, several servers are charged with the same task. Failover solutions take into account that in the event of failure, one or several servers in a cluster serve as secondary server(s), performing the work of the failed primary server(s). They act as a failover and reliably store databases without the risk of data loss, thus guaranteeing constant availability of applications and data.

Failover solutions are always a good choice when a company;s crucial applications, such as SAP, databases or web servers, must be fail-safe and easily accessible. Our consultants from the centron support hotline are always available to help you find your personal solution.

If your business depends on a fail-safe and constantly available database solution, the use of a high availability cluster is a recommendable choice for you. Basic clusters with failover consist of two nodes. There are two types available: Active-active (symmetrical) and active-passive.

All nodes of an active-active cluster are configured for services. If a fault occurs within the node of a cluster, the configured services are automatically copied to another node to ensure that the services are continued.

If you use an active-passive (asymmetrical) cluster, only one node is active, while the other remains in stand-by mode to fully take over the task in the event that the first node fails.

If possible, to minimise the weak points of a cluster (single points of failure) and to further reduce failure probability, redundant components are used for hardware.

In the services centron provides regarding cluster solutions, access to an expandable SAS storage array is, of course, included. We especially recommend such a high-availability solution if you have critical environments permitting only a few minutes of annual downtime.