http://blogs.technet.com/jeffa36/archive/2008/09/26/hyper-v-now-supports-24-logical-processors.aspxWe’ve just released an update for Hyper-V which enables 24 Logical Processor Support.  This is up from 16 Logical Processors when Hyper-V was released.  We have also increased the number of supported running virtual machines  from 128 toen-AUCommunityServer 2.1 SP1 (Build: 61025.2)