Patent ID: 7770062
Filing Date: 2010-08-03
Classification: G06F

Abstract:
1. A redundancy system in which when service performing data provided in an ACT server is changed, the changed data is transmitted to a SBY server, wherein said ACT server comprises: synchronization data management means, disposed in a shared memory in said ACT server, for managing of synchronization data with respect to each of segments of a synchronization data memory; synchronization request information setting means for, on the occurrence of synchronization data change, setting synchronization request data for a changed one of said segments corresponding to said synchronization data change to said synchronization management means; and transmitting means for transmitting said changed one of said segments to be synchronized to said SBY server on the basis of said synchronization request information set to said synchronization data management means; wherein said synchronization data management means includes wherein said transmitting means monitors at a given timing said synchronization request information holding section, and reads and then transmits said segments in said synchronization memory area on the basis of the synchronization request information held in said holding section.