A cluster comprises a plurality of computer systems, wherein each of the plurality of computer systems is configured to execute one or more virtual machines. Each of the plurality of computer systems comprises hardware and a plurality of instructions. The plurality of instructions, when executed on the...http://www.google.de/patents/US20070130566?utm_source=gb-gplus-sharePatent US20070130566 - Migrating Virtual Machines among Computer Systems to Balance Load Caused by Virtual Machines
