If you have vCenter Server licensed, then you can connect the hosts (unless they are licensed with the free Hypervisor edition) and cold migrate the VMs.
If the hosts are licensed with the free Hypervisor edition your options are either copying the VM's folder over to the new host (using e.g. Veeam's FastSCP), using VMware Converter, exporting/importing the VM as an OVF or using Trilead's VM Explorer to backup/restore the VM.
André