Thank you for your answer. So let me provide some more details.
We have created a thin vmdk which is larger that the actual datastore size. Even though the actual data on the vmdk are around 50% of the total data store, the vmdk will grow until it reaches 100% of the datastore and then the vm will crash. The vmdk is 1.8TB.
Is it possible to estimate the time that the converter need to reduce the vmdk size?
Regards,
Jim