Add new host and migrate existed vm to new cluster

[sx chen]

Hello,
       My CloudStack environment is:
       version:3.02
       cluster1:5 blade server in cluster1,Cpu is 2*6*2.53GHz


       My requirement is:
       1.I want to add 5 rack server to the CloudStack,and a new cluster
named cluster2 or add a new zone,rack server CPU is 2*6*2.0GHz，
       2.migrate some of the existed vm to the new host.

       My question is
       1.Is there a way to migrate the whole cluster?
       2.Is migrateVirtualMachine API support cross cluster or cross zone?