How to tell if VAAI is working

So - you have a new array and want to make sure VAAI is working?

1. Open up a SSH session to your ESX host upon which the VM you want to test is running
2. Run "esxtop"
3. Press "u"
4. Press "f"
5. Press "b,f,g,i,o"
6. Drag your session window wider so you can see all the columns
7. Start a storage VMotion in a supported fashion from your array vendor
8. Look for the CLONE_RD, CLONE_WR statistics on the datastore(s) in question.  If VAAI is working correctly, these numbers should increment