Distributed Index Handler 25.4
Distributed Index Handler Help

# Use Chained Distributed Index Handler Servers

You can set up multiple DIH instances in a chained configuration. In this configuration, a parent DIH distributes to child DIH servers, which in turn distribute to child servers.

DIH system architecture (chained configuration)

In this configuration, the parent DIH forwards all Content component index actions to the child DIH servers in the same way as to child Content components.

NOTE: Some index actions have different effects when sent to a child DIH than when sent to Content, because the DIH forwards the action to multiple Content components.

Chaining provides an extra level of redundancy both at the DIH level and at the Content component level. It also distributes network traffic and system load over a larger number of computers. Use a chained DIH server configuration to create a pool of Content components that are both fault-tolerant for maximum availability, and distributed for the best performance.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Distributed Index Handler 25.4

Topic Title: Use Chained Distributed Index Handler Servers