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Snapshots and Legacy Virtual Machines
If you are using a legacy virtual machine — for example, a virtual machine created under GSX Server 2 and not upgraded to use the new GSX Server 3 virtual hardware — and you have disks in undoable or nonpersistent mode, you have a snapshot. If you have persistent disks, you have no snapshot. You have the following options:
  • Persistent mode — You have no snapshot. You may take a snapshot any time the virtual machine is powered off.
  • Undoable mode — You have a snapshot. You may update or remove the snapshot any time the virtual machine is powered off.
  • Nonpersistent mode — You have a snapshot. In addition, in the virtual machine settings editor, the virtual machine is set to revert to the snapshot every time it is powered off. You may update or remove the snapshot any time the virtual machine is powered off. You may also change the settings in the virtual machine settings editor any time the virtual machine is powered off.


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