Use the vSAN health service to monitor the health of your vSAN cluster.

You can use the vSAN 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 vSAN configuration options, storage device health, and virtual machine objects.

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

Table 1. vSAN Health Check Categories
Health Check Category Description
Hardware Compatibility Monitor the cluster components to ensure that they are using supported hardware, software, and drivers.
Performance Service Monitor the health of vSAN performance service.
Network Monitor vSAN network health.
Physical disk Monitor the health of physical devices in the vSAN cluster.
Data Monitor vSAN data health.
Cluster Monitor vSAN cluster health.
Capacity utilization Monitor vSAN cluster capacity.
Online health Monitor vSAN 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.
vSAN Build Recommendation Monitor vSAN build recommendations for vSphere Lifecycle Manager.
vSAN iSCSI target service Monitor the iSCSI target service, including the network configuration and runtime status.
Encryption Monitor vSAN encryption health.
Stretched cluster Monitor the health of a stretched cluster, if applicable. For more information on "Witness appliance upgrade to vSphere 7.0 or higher with caution", see KB 76948.
Hyperconverged cluster configuration compliance Monitor the status of hosts and settings configured through the Quickstart workflow.

vSAN 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 vSAN health checks, see VMware Virtual SAN Health Check Plugin Guide.

Monitoring vSAN 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 vSAN at the host level.
  • The vSAN tab displays basic vSAN configuration.
  • The Hosts tab displays the hosts participating in the vSAN cluster.
  • The Health tab displays host-level health checks.