Have thousands of VM's with multiple VMDK's each that are all on different tiers of SAN storage. Looking for an easy way to migrate them all online without an outage to Thick Eager Zero, currently all Thick Lazy Zero. Only successful way I've done this is via Advanced svMotion which works great but surely not easy when you're talking over 4,000 VMDK's. Not sure if there's a way to force or set a default so all svMotions will convert to Eager Zero, or edit something on the vmdk descriptor so it will change automatically once it's moved with svMotion etc... Basically looking for an easy automated way to make this happen and take "user error" out of the process 
Thanks!