You can configure virtual machines with one or more virtual processors, each with its own set of registers and control structures.
When a virtual machine is scheduled, its virtual processors are scheduled to run on physical processors. The VMkernel Resource Manager schedules the virtual CPUs on physical CPUs, thereby managing the virtual machine’s access to physical CPU resources. ESXi supports virtual machines with up to 128 virtual CPUs.
Note: In this chapter, "Memory" can refer to physical RAM or Persistent Memory.