I am trying to understand how snapshots work. I understand that when I take a snapshot of a VM, the VM stops writing to the base flat.vmdk file and starts writing to the differential file delta.vmdk. Now If I take multiple snapshots at different times, I end up with multiple delta.vmdk files. Each detla.vmdk file saves the differential data from its previous snapshot or base flat.vmdk file. Now how can I merge all the delta files into the the original base flat.vmdk file, so that when I need to backup my VM, I just need to backup a single vmdk file?