What is the best sync method in the ClusterXL deployment?

The best sync method in the ClusterXL deployment is to use one dedicated sync interface56. This method provides optimal performance and reliability for synchronization traffic. Using multiple sync interfaces is not recommended as it increases CPU load and does not provide 100% sync redundancy5. Using multiple clusters is not a sync method, but a cluster topology. References: Sync Redundancy in ClusterXL, Best Practice for HA sync interface