When using NON_PERSISTENT delivery mode and a primary broker goes down, NON_PERSISTENT messages are not guaranteed to be transferred to the backup broker.
If you have messages that need to survive a broker failure, use the new SonicMQ Version 7.0 NON_PERSISTENT_REPLICATED delivery mode.
The NON_PERSISTENT_REPLICATED delivery mode ensures that messages are transferred to a standby broker, without the additional overhead that comes with PERSISTENT messages.
NON_PERSISTENT_REPLICATED Delivery Mode in the SonicMQ Version 7.0 Application Programming Guide
SonicMQ 7.0 or higher
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