Excellent I was just typing the same command set as you, so you have confirmed what I was going to do, although made it simpler by using a different naming convention. Here is what I have started:
vmkfstools -i vcenter-000001.vmdk vcenter_New1.vmdk
vmkfstools -i vcenter_1-000001.vmdk vcenter_New2.vmdk
vmkfstools -i vcenter_2-000001.vmdk vcenter_New3.vmdk
mkdir 130107_backup
mv vcenter.vmdk 130107_backup
mv vcenter_1.vmdk 130107_backup
mv vcenter_2.vmdk 130107_backup
mv vcenter-000001*.vmdk 130107_backup
mv vcenter-000002*.vmdk 130107_backup
vmkfstools -E vcenter_New1.vmdk vcenter.vmdk
vmkfstools -E vcenter_New2.vmdk vcenter_1.vmdk
vmkfstools -E vcenter_New3.vmdk vcenter_2.vmdk
cp vcenter.vmx 130107_backup
vi vcenter.vmx (What do I do when in this file?)
Restart VM
When you say "Edit the .vmx file", what do I need to do in this file?