show thick/thin provisioned disks

Hi

Is there a way to determing if an existing vmdk for a vm is thin provisioned or thick provisioned?

How do we go about determing it from VCSA or ESX ?

I only found http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1011170

but these parameters are no more available (vma version 5.0.2)

vmkfstools --version

vSphere SDK for Perl version: 5.0

Script 'vmkfstools' version: 5.0

Thank you for any tip