![]() ![]() If the operating system is Windows 2003 Standard Edition (limited to 4 CPUs) it only runs on 4 vCPUs. So, just like in the example above, if you create a virtual machine with 8 vCPUs (which you can do with vSphere) the operating system sees 8 single core CPUs. Virtual CPUs (vCPU) in VMware virtual machines appear to the operating system as single core CPUs. ![]() The operating system takes advantage of multi-core CPUs so if your CPUs are dual core, Windows Server 2003 Standard Edition runs on up to 8 cores, and if you have quad-core CPUs, it runs on up to 16 cores, and so on. If you install this operating system on an 8-socket physical box, it runs on only 4 of the CPUs. ![]() For example, Windows Server 2003 Standard Edition is limited to run on up to 4 CPUs. Some operating system SKUs ( Stocking Keeping Unit) are hard-limited to run on a fixed number of CPUs. This article provides information on setting number of cores per CPU in a virtual machine.
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