SERVER SWITCHING METHOD, SERVER, AND SERVER SWITCHING PROGRAM

摘要

PPROBLEM TO BE SOLVED: To provide a simple server switching method capable of multiplying servers in the absence of a dedicated monitor device or operator without increasing a communication load and also improving the reliability of a system at a low cost. PSOLUTION: A plurality of servers 10-1 to 10-n which are made redundant monitor one another, a standby system server detecting fault occurrence to an in-use system server automatically performs server switching, and a request message from a client 12 is received by the server becoming an in-use system to continuously provide services. The server 10-2 monitors the server 10-1, the server 10-3 monitors the server 10-2, the server 10-1 monitor the server 10-n and so on, so that the servers monitor one another in a loop. Periodic monitoring processing and switching processing in case of fault detection can be mounted by standard functions that a general OS has. PCOPYRIGHT: (C)2006,JPO&NCIPI