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The MQ Appliance high availability feature supports a network latency of up to 10ms for the replication link. As the network latency increases the synchronous replication of data takes longer and the performance of disk I/O degrades. The MQ Appliance does not support latencies above 10ms for synchronous replication because the performance impact is then too great for the majority of deployment patterns. The appliances can still communicate and exchange heartbeats at higher latencies, so more information is needed to understand why your queue managers were stopped. Can you please clarify your configuration, the network problem you encountered, the behaviour you observed, the behaviour you would like, and the maximum latency that you would like to be supported. Thank you.
In our installation we have network equipment as intermediaries between the appliance pair comunications.
If a network device has an error, the latency between both mqappliance increases, causing them to stop in an orderly until deciding which appliance should have the MQ managers running.
What we ask is that the threshold of said latency be configurable or that it can be extended to avoid these problems.
It's not clear from the description what your actual issue is. The 10ms latency is to do with synchronous replication. Network failure/recovery is handled with a different set of timers and counters. Please clarify.