You can migrate the virtual disk either using the command line or the GUI. In both cases the VM has to be shut down cleanly (not suspended).
From the command line:
- create a new folder (e.g. "LKCMMX01") for the virtual disk on the target datastore
- run: vmkfstools -i /vmfs/volumes/<source-ds>/LKCMMX01/LKCMMX01.vmdk /vmfs/volumes/<target-ds>/LKCMMX01/LKCMMX01.vmdk
- edit the VM's .vmx file and add the absolute path to the virtual disk (using the datastore's UUID instead of its name)
- reload the VM (http://kb.vmware.com/kb/1026043) or remove/re-add the VM from/to the inventory
- if the VM powers on without issues, you may delete the old virtual disk
From the GUI:
- create a new folder (e.g. "LKCMMX01") for the virtual disk on the target datastore
- use the Datastore Browser to move the "LKCMMX01.vmdk" to the target folder
- edit the VM's settings and remove (don't select delete from disk!) the virtual disk and then re-add it selecting the proper scsi ID (scsi0:0)
André