FortiAnalyzer HA can function without VRRP. and VRRP is required only if you have more than two FortiAnalyzer devices in a cluster.

FortiAnalyzer HA supports synchronization of logs as well as some system and configuration settings.

All devices in a FortiAnalyzer HA cluster must run in the same operation mode: analyzer or collector.

FortiAnalyzer HA implementation is supported by many public cloud infrastructures such as AWS, Microsoft Azure, and Google Cloud.