I backup most of the files on another server and delete the files so that the source server will have less than 2TB. I then use VMware converter to convert the source server by altering the destination disk space to less than 2TB and run conversion which success without any error. Yes, VM converter does have issue converting 2TB source server.
After converting, I get the issue : Kernel panic - not syncing: Attempted to kill init! but this can be solve from the link --> https://communities.vmware.com/thread/325984