If you have to enlarge a VMware server vmdk- file, do the following if your VMware server runs on windows:

1. Make sure, the VM is not running
2. Remove or commit any snapshots of the VM
3. Open a command prompt and cd to this path:
   C:\Program Files\VMWare\VMWare Server
4. Run this command:
   vmware- vdiskmanager -x XGB “PATHTOIMAGE.vmdk”
   (replace XGB with the new size e.g. 30GB and PATHTOIMAGE with the path to the vmdk- file)
5. Power up your VM and adjust the partition sizes
   (for example with the open source tool GParted)