The active/active software cluster

Crossed replication and mutual takeover

In an active / active software cluster, there are two servers and two mirror application modules in mutual takeover (Appli1.Safe and Appli2.Safe). Each application server is backup of the other server.

Software cluster with crossed replication and mutual failover

If one application server fails, both applications will be active on the same physical server(see the page SafeKit mirror architecture for a full description). After restart of the failed server, its application will return to run on its default primary server.

A mutual takeover cluster is a more economical solution than two separate mirror clusters, because there is no need to invest in back-up servers that will spend most of their time sitting idle waiting for the primary server to fail. Note that during a failure, the remaining server has to be able to handle the combined workload of both applications.

More information:

White paper SafeKit


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SafeKit home page Features 10 reasons to choose Hard or soft cluster Application modules Mirror cluster Farm cluster Mixed farm/mirror Mutual takeover N-1 Case studies SafeKit case studies Software publisher Distributed enterprise Data center Resources Videos of clusters SafeKit price WP software clustering WP choose a cluster Brochure Free trial of a cluster Download free trial Get evaluation keys Request support User's guide [Web] User's guide [PDF]	Evidian > Products > SafeKit The active/active software cluster Crossed replication and mutual takeover In an active / active software cluster, there are two servers and two mirror application modules in mutual takeover (Appli1.Safe and Appli2.Safe). Each application server is backup of the other server. If one application server fails, both applications will be active on the same physical server(see the page SafeKit mirror architecture for a full description). After restart of the failed server, its application will return to run on its default primary server. A mutual takeover cluster is a more economical solution than two separate mirror clusters, because there is no need to invest in back-up servers that will spend most of their time sitting idle waiting for the primary server to fail. Note that during a failure, the remaining server has to be able to handle the combined workload of both applications. More information: White paper SafeKit