You've been able to do MSCS in VMware for a while (I've dealt with it all the way back on ESX 2.5). With 6.0 though, there is support for vMotion of nodes - so they are portable now. You still need RDMs and anti-affinity rules though.
Tom above is quite correct about iSCSI as a workaround too. This works well on NetApp or Equalogic kit.