If you encounter problems when using vSAN, you can use troubleshooting topics. The topics help you understand the problem and offer you a workaround, when it is available. Uploading a vSAN Support BundleYou can upload a vSAN support bundle so VMware service personnel can analyze the diagnostic information. Using Esxcli Commands with vSANUse Esxcli commands to obtain information about vSAN and to troubleshoot your vSAN environment. Using vsantop Command-Line Tool Use the command-line tool - vsantop - that runs on ESXi hosts to view the real time vSAN performance metrics. You can use this tool to monitor vSAN performance. vSAN Configuration on an ESXi Host Might FailIn certain circumstances, the task of configuring vSAN on a particular host might fail. Not Compliant Virtual Machine Objects Do Not Become Compliant InstantlyWhen you use the Check Compliance button, a virtual machine object does not change its status from Not Compliant to Compliant even though vSAN resources have become available and satisfy the virtual machine profile. vSAN Cluster Configuration IssuesAfter 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. Handling Failures in vSANvSAN handles failures of the storage devices, hosts and network in the cluster according to the severity of the failure. You can diagnose problems in vSAN by observing the performance of the vSAN datastore and network.