Swact a Master/Controller Using HorizonΒΆ

Swacting initiates a switch of the active/standby roles between two controllers.

Swact is an abbreviated form of the term Switch Active (host). When selected, this option forces the other controller to become the active one in the HA cluster. This means that all active system services on this controller move to standby operation, and that the corresponding services on the other controller become active.

Complete this procedure when you need to lock the currently active controller, or undertake any kind of maintenance procedures; for example, when updating hardware or replacing faulty components.


  1. From Admin > Platform > Host Inventory, select the Hosts tab.

  2. From the Edit menu for the standby controller, select Swact Host.