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# Default Topics

Transformation Hub manages the distribution of events to topics, to which consumers can subscribe and receive events from.

Transformation Hub includes the following default topics:

Topic Name | Event Type | Producers For This Topic
--- | --- | ---
mf-event-avro-esmfiltered | Filtered Avro events for consumption by ESM, Vertica, or Intelligence, depending on the enrichment scenario. | Transformation Hub, ESM
mf-event-cef-esmfiltered | Filtered CEF events for consumption by ESM. | SmartConnector, Connector in Transformation Hub (CTH).
mf-event-avro-enriched | Event data in Avro format that has been enriched by the Enrichment Stream Processors. | Transformation Hub
th-arcsight-avro | For ArcSight product use only. Event data in Avro format. | Transformation Hub, SmartConnector, Connector in Transformation Hub (CTH) or ESM
th-arcsight-avro-sp_metrics | For ArcSight product use only. Routing stream processor operational metrics data. |
th-arcsight-json-datastore | For ArcSight product use only. Transformation Hub dynamic configuration data. |
th-binary_esm | Binary security events, a format consumed by ArcSight ESM. | SmartConnector
th-cef | CEF event data. | SmartConnector, Connector in Transformation Hub (CTH).
th-cef-other | CEF event data destined for a non-ArcSight subscriber. |
th-syslog | The Connector in Transformation Hub (CTH) feature sends raw syslog data to this topic using a Collector. | Should only be configured as Collector or CTH destination.

In addition, using ArcSight Management Center, you can create new custom topics to which your SmartConnectors can connect and send events.

# Topic Data Preservation

Topic data is preserved across Transformation Hub restarts, reinstalls, and upgrades.

- When a Transformation Hub reinstall is performed, all data in a Kafka topic is preserved. No data is lost.
- When the consumer resumes data collection from the topics, the consumer re-starts where it last left off. No data is lost.