US Patent:
20070043972, Feb 22, 2007
Inventors:
Simon Graham - Bolton MA, US
Laurent Fournie - Belmont MA, US
Jeffrey Somers - Northboro MA, US
Assignee:
Stratus Technologies Bermuda Ltd. - Hamilton
International Classification:
G06F 11/00
Abstract:
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 to service end-users. Finally, the separate subsystems may be merged in an efficient fashion and fault-tolerant operation will resume upon the combined system.