Seems to me that you are decreasing, rather than increasing availability in creating a separate cluster for vCenter and infrastructure VMs. I have never thought 2 host clusters were a "best practice." Furthermore, in any environment, given the choice between 2 smaller clusters and one larger cluster, I would always go with the larger cluster; up to fairly substantial deployments. Unless you are reaching some of the supported vSphere maximums (32 hosts/cluster), consider guaranteeing/constraining resources for infrastructure management with a resource pool. Also, I agree with lenzker, HB adds complexity not avaiability.
↧