Hallo LittleNo,
Per knowledgebase:
Note: Ensure that you have enough free space available on the physical disk to perform the operation. The free disk required is equal to the current .vmdk size. For example: If the vmdk is 20GB in size and you want to increase it to 30GB (a 10GB increase), you will require 20GB + 10GB free space on the physical disk.
Ich hoffe das ist nuetzlich fuer Sie.
mfG
-Rick