Multiple instances of operating systems execute cooperatively in a single multi-processor computer wherein a single physical machine is subdivided by software into multiple partitions, each with the ability to run a distinct copy, or instance, of an operating system. Each individual instance has the...http://www.google.com.au/patents/US6260068?utm_source=gb-gplus-sharePatent US6260068 - Method and apparatus for migrating resources in a multi-processor computer system