Folder creation in vSAN Datastore fails with error "Cannot complete file creation operation. There are currently 0 usable fault domains. The operation requires 3 more usable fault domains. Failed to create object."

Products

• VMware vSAN
• VMware vSAN 7.x
• VMware vSAN 8.x

Issue/Introduction

Unable to access vSAN Datastore on a 2 node vSAN ROBO Cluster.

Folder creation in vSAN Datastore fails with error "Cannot complete file creation operation. There are currently 0 usable fault domains. The operation requires 3 more usable fault domains. Failed to create object."

Environment

VMware vSAN 7.x
VMware vSAN 8.x

Cause

Found a Stale witness entry in the vSAN Cluster 

from the VCenter logs I can see that the witness node was partitioned but there is another witness node which is in the cluster 

another witness node ------->  Host-15####, 2, 66F4697D-94Fd-87Ca-####-############

2025-04-08T15:04:51.364Z INFO vsan-mgmt[3560379] [VsanHealthSummaryLogUtil::PrintHealthResult opID=noOpId] Cluster ##-vSAN  Overall Health : red
   Group network health : red
      Test hostconnectivity health : green
      Test clusterpartition health : red
         HostsList: Host  Partition  HostUuid
                    (Host-10####, 1, 64354C73-D414-4D78-####-###########), (Host-10####, 2, 643569Ec-C2D0-####-####-#########), (Host-10####, 2, 643577Bb-5815-####-####-##########),
                    (Host-15####, 2, 66F4697D-94Fd-87Ca-####-############),



virtual  witness ESXi host was added to the vSAN Cluster by mistake
        

Resolution

Remove the virtual  witness ESXi host  from the cluster by following steps in the Resolution section of the KB Unable to add Witness node to vSAN stretch cluster with error "The witness host must not be part of a vSAN enabled cluster"