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Active/Passive mode

 

In Active/Passive mode, computer A has the running application on it, and computer B is backup, only being used when MSCS detects a problem.

We can use this mode with only one shared disk, but, if any application causes a failover, all the applications must be transferred as a group (because only one computer can access the shared disk at a time).

We can configure MSCS with A as the preferred computer. Then, when computer A has been repaired or replaced and is working properly again, MSCS detects this and automatically switches the application back to computer A.

If you run more than one queue manager, consider having a separate shared disk for each. Then put each queue manager in a separate group in MSCS. In this way, any queue manager can failover to the other computer without affecting the other queue managers.

 

Parent topic:

Cluster modes

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