After you change the vSAN configuration, vCenter Server performs validation checks for vSAN configuration. Validation checks are also performed as a part of a host synchronization process. If vCenter Server detects any configuration problems, it displays error messages.


Error messages indicate that vCenter Server has detected a problem with vSAN configuration.


Use the following methods to fix vSAN configuration problems.

Table 1. vSAN Configuration Errors and Solutions

vSAN Configuration Error


Host with the VSAN service enabled is not in the vCenter cluster

Add the host to the vSAN cluster.

  1. Right-click the host, and select Move To.

  2. Select the vSAN cluster and click OK.

Host is in a VSAN enabled cluster but does not have VSAN service enabled

Verify whether vSAN network is properly configured and enabled on the host. See Configuring vSAN Network.

Add memory to the host. If you are using a nested ESXi VM, shutdown the VM and increase its memory.

VSAN network is not configured

Configure vSAN network. See Configuring vSAN Network.

Host cannot communicate with all other nodes in the VSAN enabled cluster

Might be caused by network isolation. See Networking Requirements for vSAN documentation.

Found another host participating in the VSAN service which is not a member of this host's vCenter cluster.

Make sure that the vSAN cluster configuration is correct and all vSAN hosts are in the same subnet. See Designing the vSAN Network.