Data replication method

Details Data replication method Data replication method

2011-01-04

2011-01-04

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130, C714S010000, C714S011000, C709S208000

Reexamination Certificate

active

07865763

ABSTRACT:
Provided is a data replication method capable of reducing the number of communication times when a processing result of an active system is replicated to a standby system. The data replication method, in which a first computer receives a first message containing a first processing request, and a plurality of second computers replicates the first message, includes the steps of: sending, by a third computer, the first message to the first computer and the second computers; sending, by each of the second computers, a message receive notification of the first message to the first computer; sending, by the first computer, after reception of the message receive notification from the second computers, the message receive notification of the first message to the third computer; and sending, by the first computer, a notification indicating that the first processing request becomes executable by the first computer to the second computers.

REFERENCES:
patent: 7461130 (2008-12-01), AbdelAziz et al.
patent: 2003/0018732 (2003-01-01), Jacobs et al.
patent: 2005/0187891 (2005-08-01), Johnson et al.
patent: 2008/0126853 (2008-05-01), Callaway et al.

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