DATA REPLICATION METHOD AND DATA REPLICATION SYSTEM

PROBLEM TO BE SOLVED: To provide a highly reliable data replication method while reducing the number of necessary communication times when a processing result of an active server is replicated to a standby server through communication. SOLUTION: The data replication method allowing a first computer to receive a first message including a first processing request and a plurality of second computers to replicate the first message is implemented as follows: a third computer transmits the first message to the first computer and the plurality of second computers; the second computers transmit a notification of receipt of the first message to the first computer; the first computer transmits a notification of receipt of the first message to the third computer after receiving the notification of receipt from all the second computers; and the first computer transmits to the second computers a notification that the first processing request is executable by the first computer. COPYRIGHT: (C)2010,JPO&INPIT