Running ESXCLI Commands Against ESXi 4.x Hosts
When you run an ESXCLI vCLI command, you must know the commands supported on the target host specified with --server or as a vMA target.
VMware partners might develop custom ESXCLI commands that you can run on hosts where the partner VIB has been installed.
Run esxcli --server <target> --help for a list of namespaces supported on the target. You can drill down into the namespaces for additional help.
Important ESXCLI on ESX 4.x hosts does not support targeting a vCenter Server system. You can therefore not run commands with --server pointing to a vCenter Server system even if you install vCLI 5.0.