Patent ID: 7617413
Filing Date: 2009-11-10
Classification: G06F

Abstract:
1. A method of preventing erroneous take-over in a dual redundant server system, which is applied to a server system, and said server system comprises a primary server and a redundant server, and said method comprising the steps of: continuously outputting a heartbeat packet to said redundant server by said primary server; determining whether or not said redundant server has received said heartbeat packet; setting a live flag stored in said redundant server to a live state by said redundant server when said redundant server has received said heartbeat packet; producing a detecting signal by said redundant server when said redundant server has not received said heartbeat packet; sending said detecting signal to said primary server though a redundant external transmission unit installed at said redundant server; and taking over said primary server by said redundant server, when said redundant external transmission unit has not received an acknowledged signal sent from said primary server in response to said detecting signal.