In Citrix ADC high availability, when adding a secondary appliance to an existing primary, which configuration on the primary ensures the primary remains PRIMARY and its configuration is preserved?

• A. Set Secondary to STAY SECONDARY in the Configure HA Node settings.
• B. Set Primary to STAY PRIMARY in the Configure HA Node settings.
• C. Enable HA monitoring on all the interfaces of the PRIMARY device.
• D. Enable HA monitoring on all the interfaces of the SECONDARY device.

Answer: (B)

In this scenario you want the original device to stay in the primary role and keep its configuration as the authoritative source. The option that achieves this is to configure the primary with Stay Primary. This setting locks the primary’s role so it will not flip to secondary during the HA join process or in failover situations, ensuring the primary’s running configuration remains intact. Once the secondary is added, it will synchronize from the primary, preserving the primary’s setup and ensuring continuity.

Other options don’t accomplish this role preservation. Monitoring settings on interfaces are about detecting health and triggering failover, not about which unit holds the primary role. Choosing to make the new secondary stay secondary would prevent it from taking over as primary at all, which undermines preserving the original primary’s role and configuration.