You should be using vmfs 3 / vmfs 5.56 with Vspphere 5.0 or 5.1 , the largest size of vmdk supported is 2TB - 512 MB , anything beyond that is not supported.
Use Storage Vmotion to move the vmdk with advanced option "lets you choose the disk individually and the destination it goes to".
Or do a V2V conversion which should also do a migration without a license with powered on VM.
Message was edited by: psolanki