Original Publication Date: 08/08/2013
Updated Date: 06/04/2014
The high availability (HA) groups feature is designed to assign the active system without user intervention. Therefore, the operator of a BIG-IP system should not attempt to manually control HA operation by using the Force to Standby feature. As a result, the HA group feature may override the active/standby state and may reassign the active system automatically.
If a manual change of the active state is required, F5 recommends that you disable the HA group feature, or that you take the active system offline temporarily.
To take a system offline, perform one of the following procedures:
Using the Configuration utility to take a system offline
Using the Traffic Management Shell (tmsh) to take a system offline
run sys failover offline
run sys failover online