As of 5876.229 we support FLM and VMware for the migration of a RDM or VMFS (though RDM is by far the most useful use-case). It can be migrated from a 5875 or 5773 frame to a VMAX running 5876.229. This can be done using Solutions Enabler 7.6 or Unisphere 1.6.1.  I am rather sure it is supported with clusters, but I am checking on that with engineering now.
I'm trying to implement FLM in our environment and I've a question related to migrating the data of a 4 node cluster which is a VM. Can i implement FLM on a VMware cluster or it has to be a stand alone host used in FLM?
FLM with VMware