Panic is the enemy of data recovery.
Understanding why a datastore became inaccessible is the first step in choosing the correct recovery path.
Often, the VMFS volume is healthy, but a specific VM won't power on due to a corrupted .vmdk descriptor file. You can recreate this small text file using the vmkfstools command. This points the ESXi host back to the actual data stored in the -flat.vmdk file. 4. Professional VMFS Recovery Software
Whether the is still showing up in your ESXi host
Panic is the enemy of data recovery.
Understanding why a datastore became inaccessible is the first step in choosing the correct recovery path. vmfs datastore recovery
Often, the VMFS volume is healthy, but a specific VM won't power on due to a corrupted .vmdk descriptor file. You can recreate this small text file using the vmkfstools command. This points the ESXi host back to the actual data stored in the -flat.vmdk file. 4. Professional VMFS Recovery Software Panic is the enemy of data recovery
Whether the is still showing up in your ESXi host the VMFS volume is healthy
oCam 
VirtualDVD 
CoffeeZip 
SecretFolder 
CapturePlus