A: Based on VMware's latest data about configuration at the VMware website, the following are some key limits around hosts and virtual machines (VMs).

System Resource vSphere 5
Host Logical Processors 160
Host Physical Memory 2TB
Host Virtual processors per host 2048
VM vCPUs per VM 32
VM Memory per VM 1TB
VM Max virtual disk size 2TB
Cluster Nodes 32
Cluster Virtual Machines 3000