Methods and systems are provided by which a computer system, and in particular, a lockstep fault-tolerant computer system, may be split into a plurality of independently operational subsystems. Each subsystem may be examined, managed or upgraded by an administrator while the overall computer system continues...http://www.google.cl/patents/US7669073?utm_source=gb-gplus-sharePatent US7669073 - Systems and methods for split mode operation of fault-tolerant computer systems
