Hyper-V Program Manager
Last week we released an update that enables Hyper-V to run on systems with 24 logical processors. For example, a quad processor 6-core system. The update also allows you to run up to 192 virtual machines on such a system. A couple of things to note:
Otherwise you can get the update from here: http://www.microsoft.com/downloads/details.aspx?FamilyID=fe36823a-7e5a-4262-9bf5-d6b3ae3ad375&DisplayLang=en
OK, obvious question: why limit to 24 logical processors, when Windows supports 64 in a 64-bit OS? Is it simply that this is the most you've currently tested with?
32-core (8 socket/quad-core) Opteron systems are available, such as Sun's Sun Fire X4600 M2.
Can you describe the background on the virtual/logical ratio.
Is this just a limit you have chosen to support, or do you maintain data structures which support that, by CPU?
Can I assign 40 Virtual CPUs to 4 Logicals and use 20 Virtual CPUs on the remaining 4 Logicals (total of 60v for 8l).
These limits are the ones that we have tested and officially support. There are no hard coded limits in the system - but we know from our testing that you may encounter performance / stability issues if you go beyond these limits.