How did you get the vmdk file over to ESX in the first place? If the source vmdk file came from VMware Workstation, you will need to run VMware Converter either on the running VM or the flat files (non-running VM) and then point it to your esx environment. Once in your environment, you can then run the command you had entered originally.
Thanks Wiki for your post. I did mistake on my steps I uset vmkfstools. I copied the file not shutdowned server. i shutdown VMware Workstation file then copied the file, then used vmkfstools command. All is fine Thanks very much