You can check the health of the Virtual SAN cluster.

You can use the Virtual SAN health checks to monitor the status of cluster components, diagnose issues, and troubleshoot problems. The health checks cover hardware compatibility, network configuration and operation, advanced Virtual SAN configuration options, storage device health, and virtual machine objects.

The Virtual SAN health checks are divided into categories. Each category contains individual health checks.

Table 1. Virtual SAN Health Check Categories

Health Check Category


Hardware Compatibility

Monitor the cluster components to ensure that they are using supported hardware, software, and drivers.

Performance Service

Monitor the health of a Virtual SAN performance service.


Monitor Virtual SAN network health.

Physical disk

Monitor the health of physical devices in the cluster.


Monitor Virtual SAN data health.


Monitor Virtual SAN cluster health.


Monitor Virtual SAN cluster limits.

Online health

Monitor Virtual SAN cluster health and send to VMware’s analytics backend system for advanced analysis. You must participate in the Customer Experience Improvement Program to use online health checks.

Virtual SAN iSCSI target service

Monitor the iSCSI target service, including the network configuration and runtime status.


Monitor Virtual SAN encryption health.

Stretched cluster

Monitor the health of a stretched cluster, if applicable.

Virtual SAN periodically retests each health check and updates the results. To run the health checks and update the results immediately, click the Retest button.

If you participate in the Customer Experience Improvement Program, you can run health checks and send the data to VMware for advanced analysis. Click the Retest with Online health button.

For more information about Virtual SAN health checks, see VMware Virtual SAN Health Check Plugin Guide.

Monitoring Virtual SAN Health on a Host

The ESXi host client is a browser-based interface for managing a single ESXi host. It enables you to manage the host when vCenter Server is not available. The host client provides tabs for managing and monitoring Virtual SAN at the host level.

  • The vSAN tab displays basic Virtual SAN configuration.

  • The Hosts tab displays the hosts participating in the Virtual SAN cluster.

  • The Health tab displays host-level health checks.