Question about cross-host Storage vMotion

Hello folks,

I would like to check whether vSphere 5.0(with vCenter 5.0 and ESXi 5.0) environment) support cross-host Storage vMotion? I would like to keep VMs running and change the HOST and DATASTORE simultaneously.

I went through several documents and seens that it only support at least vSphere 5.1 with vSphere Web Client? I tried to use vSphere 5.0 Web Client but the option is grayed out.

Thank you.