VxRail: vSAN Partitioned after Powering the Cluster Up

Summary: The cluster was shut down and after being powered back up, vSAN is partitioned due to vmk3 not being tagged for vSAN traffic.

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Symptoms

  • ESXi UI shows that vSAN traffic is disabled for vmk3
  • The output of the command below is empty:
    esxcli vsan network list
  • Each node shows only itself in the cluster. The output of the command below shows Sub-Cluster Member Count: 1
    esxcli vsan cluster get
     

Cause

Vmk3 became untagged for vSAN traffic on the hosts.

Resolution

Run the below command on each node to tag vmk3 for vSAN traffic:
 esxcli vsan network ip add -i vmk3



            


        

        
        
Affected Products

        VxRail, VxRail Appliance Series, VxRail Software







                        

                            

    

        

            

                
                    
 Article Properties

                
            

            

                

                        
Article Number: 000189558

                

                
                

                        
Article Type: Solution

                

                

                        
Last Modified: 21 Nov 2025


                

                    

                            
Version:  2

                    


            


        

    

    

        

            

                
                    
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