This article outlines the steps to identify which user deleted a VMDK from a virtual machine using the vSphere Web Client.
VMware vCenter Server Appliance 7.x
VMware vCenter Server Appliance 8.x
Steps to Identify the User Who Deleted a VMDK via vSphere Web Client:
Log in to the vSphere Web Client.
Select the impacted virtual machine.
Navigate to the “Tasks” tab.
Locate the timestamp corresponding to when the issue was reported.
Look for a "Reconfigure Virtual Machine" event around that time.
Check if the event includes a VMDK deletion. If so, review the Initiator field — this will display the user account that performed the delete operation.
Example :