how to take vm back ...what is the best procedure
well there are several ways...you could use VDP from VMware (http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=201656... , works quite well) or you can use a 3rd party Product such as VEEAM / Acronis / Symantec / IBM TSM...
