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Monthly Archives: August 2011

Summary of requirements for Windows Server licensed per processor under SPLA:

1.     You need a license for each physical CPU

2.     You also need a license for each vCPU

Exceptions & qualifications to the above for Enterprise Edition:

EE allows up to 4 VMs per licensed server, but this right is misleading as SPUR says:

ii)
You need one software license for each physical processor on a server, which permits you to run on that server, at any one time:

  • one instance of the server software in one physical operating system environment (or OSE) , and
  • four instances of the server software in virtual operating system environments (or OSEs).  You may run only one instance per virtual operating system
    environment (or OSE). You may run an instance of Standard in place of Enterprise in any of these virtual operating system environments (or OSEs).

But the SPUR also says:

i)     For each additional set of up to four instances of the server software that you run in virtual operating system environments (or OSEs), you need an additional software license for each physical processor on the server.

Roughly translated this means: Read More »