How to copy/clone a powered on VM without registering it?

Hi,

Is there any way (e.g. by PowerCLI etc.) that I can copy or clone a powered on VM from one datastore on our vCenter to another, without having the new copy/clone registered as a VM in the vCenter? I simply need an exact copy of a powered on VM, but without the trouble of having to Remove the copy from Inventory afterworths.

Thanks in advance,

Rasmus