I have a relatively large VMware ESXi 4 environment (~300 VMs running on ~50 hosts, some standalone, some clustered) that I need to upgrade to ESXi 5. The vCenter Server is already at v5.0.0, so ...
OR could we nickle and dime it together over time with ESXi + support agreements, buy Vcenter Foundation when we add our second host and then upgrade Esxi to Vshpere Advanced when the urge to Vmotion ...