Patent ID: 8195777
Filing Date: 2012-06-05
Classification: G06F

Abstract:
1. A method of adding a new standby computer to a computer system that includes an active computer performing service processing and transmitting update information on data stored in the active computer and a standby computer for maintaining a replica set of the data stored in the active computer by applying the update information transmitted by the active computer to the replica set of the data, the method comprising: selecting the standby computer from the computer system; initiating accumulation of the update information being transmitted by the active computer in the new standby computer; temporally pausing application of the update information by the selected standby computer to the replica set of the data stored in the selected standby computer; transferring the replica set of the data stored in the selected standby computer to the new standby computer for storage of the transferred replica set of the data in the new standby computer; checking whether the update information transmitted by the active computer that has been applied to the data stored in the active computer has been applied to the replica set of data transferred from the selected standby computer; and if the update information transmitted by the active computer that has been applied to the data stored in the active computer has not been applied to the replica set of data transferred from the selected standby computer, applying the update information transmitted by the active computer that has been applied to the data stored in the active computer to the transferred replica set of the data stored in the new standby computer.