VMware ESX 4.1 and vCenter Server 4.1 Edition


vSphere Resource Management Guide : Managing Memory Resources : Administering Memory Resources : Understanding Memory Overhead : Overhead Memory on Virtual Machines

Overhead Memory on Virtual Machines
Virtual machines incur overhead memory. You should be aware of the amount of this overhead.
Table 3‑2 lists the overhead memory (in MB) for each number of VCPUs.