we purchased vsphere 6 essential plus & Vcenter essential licenses.
having 3 Hosts (Esxi) with 3 VMs on each, working as standalone on local storage.
we got some space around 1TB from SAN storage all the hosts connected to SAN with HBA.
our goal is to configure more critical VMs on hosts to be stored on SAN with HA Configurations.
how to achieve the clustering in current scenario so that critical VMs should be at SAN with HA and other VMs don't require HA and must be on local storage.
and are there license limitations?