To ensure high availability when both nodes could fail a health check, which HA configuration should be applied?

• A. Disable HA Fail-safe mode on the Primary Citrix ADC only.
• B. Configure HA Fail-safe mode on each Citrix ADC independently.
• C. Configure HA Fail-safe mode on the Primary Citrix ADC only.
• D. Disable HA Fail-safe mode on the Secondary Citrix ADC.

Answer: (C)

In a two-node Citrix ADC HA pair, health checks determine who should be active, and enabling a fail-safe option gives you a clear decision point when both nodesreport failures. Configuring HA Fail-safe on the Primary only provides a single, authoritative tie-breaker in a scenario where both devices could fail health checks. This ensures there is one active unit and one passive unit, preserving availability and avoiding split-brain or ambiguous states. Leaving fail-safe off or enabling it on both could lead to unpredictable leadership in uncertain health conditions, risking service disruption.