title: Is it safe to allocate logical CPUs to a VM after creation
body: <p>We're going to be serving our portal software on a virtual machine running Centos 5.2 on VMWare ESXi.</p>
  
  <p>We're initially going to allocate two logical CPUs but there's a possibility that we might want to add an additional two some time in the future. We don't want to allocate all resources at this time because a few VMs are fighting for space on the server.</p>
  
  <p>If we decided to move our VM off to a separate server later on and allocate additional logical CPUs bringing it to four, will this cause us any problems?</p>