SERVERware 3 How does the failover work
Failover is an automatic operation of switching to a redundant or standby computer server, system,
hardware component, or network upon the failure or abnormal termination of the previously active
application, server, system, hardware component, or network. It is an essential part of the high
availability characteristic of a system.
In SERVERware 3, failover occurs when a processing host (along with all the VPSs running on that
host) becomes unavailable. In this situation, the controller automatically connects another processing
host to the appropriate storage host VPS volumes and the processing host begins starting VPSs,
effectively taking over the hosting of those VPSs and services. Because of the speed of this switch
and the fact that data provided by the storage host is up-to-date, data loss during this operation will
be minimal if any at all.
Since all VPSs and services are still running, system technicians can devote their full attention to the
the task of resolving the issues with the failed host and getting it back up as soon as possible.