Q: What does the Performance Service - All hosts contributing stats check do?
A: This check verifies that all hosts which are currently part of the same network partition are contributing statistics to the collection. Any host that is not in the same network partition will not be checked. Use the general network health checks to assess this aspect of overall cluster health. This check is used to verify that the vSAN performance service can communicate with the host and retrieve statistics.
Q: What does it mean when it is in an error state?
A: If this check is Yellow, it means some hosts are not contributing performance statistics.
Q: How does one troubleshoot and fix the error state?
A: There are no known causes for this health check to fail. If it fails consistently, contact VMware Support and file a Support Request. Provide support bundles for the entire cluster, including the vCenter Server and all hosts.